The project is aimed at using the expertise that involved in consortium entities acquired in materials science. The consortium consists of three representative national institutes: INCD for Chemistry and Petrochemistry – ICECHIM Bucharest, INCD for Electrochemistry and Condensed Matter - INCEMC Timisoara and INCD of Chemical Pharmaceutical - ICCF Bucharest, and of two prestigious universities: University POLITEHNICA of Bucharest and the University of Bucharest and a remarkable institute of Romanian Academy: Institute of Macromolecular Chemistry – Petru Poni Iasi. Although having great

tradition and noteworthy results, the first five institutions face a series of problems, from the lack of financial funds, equipment and the aging employees for ICCF and partly for INCEMC and ICECHIM, to the lack of highly qualified staff required for recent investments in equipment for all 5 institutions. In this respect, the project attempts relaunching the activity in the first 5 institutions of the consortium, by putting together the existing competencies, so as to develop new technologies in order to obtain new materials with high performance properties. Given that, 3 of the research teams are specialized in polymers (ICECHIM, Petru Poni and UPB) the developed technologies will use the polymers as intermediates or as a component in the finished product. To this end it is envisaged getting the titanium nitride for prosthetic coatings via inorganic-organic polymer nanocomposites, obtaining photocatalytic materials and antibacterial coatings by sol- gel reactions, obtaining of short-life or one-time use biomaterials from aliphatic polyesters and

micro or nanocellulose and the development of new polyphase materials with medium or long life, based on biopolymers, through 3D printing. The project intends the full use of A1, A2, B and C checks in order to increase the institutional performance of partners.

Coordinator- National Institute for Research &Development for Chemistry and Petrochemistry- ICECHIM, having  headquarters in Bucuresti, Spl. Independentei 202, Sector 6, Project director Dr.ing. Andrei Sarbu, Main Scientific Researcher I degree, tel. (+4)0213128501, Fax: (+4)0213123493, email: andr.sarbu@gmail.com ,

Partner 1 –  National Institute for Chemical- Pharmaceutical Research and Development ICCF, having  headquarters in Bucuresti, Calea Vitan 112 C, sector 3, Project Responsible: Dr. Irina Lupescu- Main Scientific Researcher I degree, tel. (+4)0213212117, fax (+4)0213222917, email: irina.lupescu1@gmail.com

Partner 2 -  National Institute for Research & Development for Electrochemostry and Condensed  Matter, having  headquarters in Timisoara, str. Aurel Paunescu Podeanu, nr. 144, jude?ul Timis,  Project  Responsible Dr. Carmen Lazau Main Scientific Researcher II degree tel: (+4)0727254461, Fax: (+4)0256204698, email: carmen.lazau@gmail.com,

Partner 3-  University Politehnica from Bucharest,having  headquarters in Bucure?ti,  Spl. Independen?ei  313, sector 6, Project responsible Prof.dr.ing. Horia Iovu, Full professor, tel. (+4)021 4023922, Fax: (+4)0214115365, email: horia.iovu@upb.ro

Partner 4-  University from Bucharest, having  headquarters   in Bucuresti, Bd. Mihail Kogalniceanu, nr.36-46, Bucuresti-sector 5, Project Responsible  Dr. Anca Dumitru, Lecturer,  tel. (+4)021 457 44 18, Fax: (+4)0214574418,  email: anka.dumitru@gmail.com

Partner 5- Institute for Macromolecular Chemistry „Petru Poni”, having  headquarters   in  Iasi, Aleea Grigore Ghica Voda, nr. 41A,  Project Responsible  dr. Valeria Harabagiu, Main Scientific Researcher I degree,  tel. (+4)0741-027090, Fax: (+4)0232211299, email: hvaleria@icmpp.ro

EXECUTIVE UNIT FOR FINANCING HIGHER  EDUCATION , RESEARCH  DEVELOPMENT AND INNOVATION

 UNITATEA EXECUTIVA PENTRU FINATAREA INVATAMANTULUI SUPERIOR, CERCETARII, DEZVOLTARII SI INOVARII- UEFISCDI

Director General
Adrian Curaj
Tel: 0213071910
Fax: 0213071919

Address: UEFISCDI  Str. Mendeleev, nr. 21-25, Etaj 3, cam. 321, Sector 1, Bucuresti

Annex 1 - Public Report Stage 1

Project 1:„Innovative process for synthesis of titanium nitride ceramics via nanocomposite polymer hybrids for biomedical application””- BIOTiN

Stage 1-1: “Formulation and verification of the conceptual model regarding the synthesis of

hybrid inorganic- organic nano structures  based on porous titania and their processing in TiN for biomedical applications” 

This multidisciplinary project aims at developing, through an innovative manufacturing process, an original TiN ceramic powder, having high quality and performance parameters, suitable for biomedical applications such as prostheses. In order to develop new advanced materials, the approach will utilize an integrated technology and processing techniques that are used in industrial appliances, but also nanotechnology specific methods. The purpose of the project is to obtain titanium nitride ceramics from hybrid polymeric composites by starting from a synthesized, porous inorganic structure. The technology proposes a new approach for developing materials that generate a unique class of ceramics with outstanding characteristics, such as improved mechanical and thermal properties, in comparison to other conventional similar materials.

Specific Objectives: O1. consists of formulation and development of an experimental technology concept for manufacturing of advanced ceramic powders. The technology will be developed in order to obtain a new TiN via composite polymer hybrids, obtained through radical polymerization of a vinyl monomer in pre-synthesized porous TiO₂. Subsequent carbonization steps of the polymer and the treatment of TiO₂-Carbon composites at high temperatures and under controlled atmosphere have been developed. Biocompatibility tests (toxicity, biological/chemical reaction) will be performed in order to increase the bioperformance for possible application in prosthetic coatings; O2. consist of proving the feasibility and utility of the new technology for the ceramic powder production line, with the subsequent validation of the manufacturing technology; O3. isrepresented by dissemination of scientific results at national and international level. 

Titanium nitride (TiN) is an important technological material with various applications, based on its unique properties. This material can be described as a biocompatible one that exhibits the property of inhibiting bacterial colonization. TiN coatings have shown promising results in terms of blood tolerance, with a near-zero hemolytic percentage. Due to its biocompatibility and excellent hemocompatibility, besides application in microelectronics, anti-corrosion and antireflection coatings for displays, TiN has a wide range of medical applications such as medical devices, dentures, hip joint materials and heart valve replacement. Because TiN coatings are nontoxic, they can be used to make or cover various implants, particularly orthopedic.

In the first stage, there were elaborated: 6 Research reports on: (1) obtaining/characterization of the host inorganic structure (TiO₂) through various innovative methods with economically accessible precursors; (2) host-guest polymerization of a vinyl monomer in the synthesized inorganic matrix; (3) elaboration of complex characterization protocols by correlating structure-property parameters, using techniques for advanced materials; (4) obtaining/characterization of Titania-Carbon composites for subsequent transformation into TiN; (5) transformation of Titania-Carbon composites into TiN and description of the property set for the obtained ceramic powder; (6) examination of ceramic powder for potential biomedical application. Three research jobs were created (2 at IC – ICECHIM, 1 at P2 – INCEMC). According to the evidence presented on the platform, 3 research jobs were created, by employing 3 research assistants under legal circumstances, in agreement with the declaration of the general manager. The availability of the positions has been made public on www.euraxess.gov.ro and www.jobs.ancs.ro. 6 scientific communications have been achieved and the results have been disseminated by presenting 5 posters and 1 oral presentation at an international symposium.

            Based on the obtained results, it can be noticed that the performance indicators programmed for Project 1 in Phase 1 have been fully achieved. 

Project.2: “Nanostructured hybrid materials obtained by «eco-fiendly» methods for the surfaces protection against damages caused by micro-organisms and pollutants- MAHIN”

Stage 1-2: “Preliminary experimental researches to obtain hybrid materials. The scientific design of nanostructured hybrid materials preparation and the development of the research infrastructure” 

Scientific Results

            During the stage 1 7 activities, with 6 partners have been carried out. In two of these activities preliminary experimental researches were performed for the synthesis of metallic nanoparticles (Cu, Ag) and metallic oxides (ZnO) with antibacterial properties by hydrothermal and solvotermal methods. In Table 1 are presented 11 types of synthesized nanoparticles.

Table 1 Types of metallic nanoparticles and metallic oxides synthesized

            The prepared nanoparticles were characterized in 3 activities, by both, structural (FT-IR, RAMAN, XRD) and morphological (SEM, TEM) methods. The antibacterial properties testing of synthesized nanoparticles has been the subject of another activity.

            Following the performed analyzes, it was found that the synthesis method directly influences the morphology and the size of the nanoparticles, having an indirect effect on the biological activity too.

            In the case of testing the action of nanoparticles on biofilms formation, it was found that AgNPs have the ability to combat the formation of biofilms generated by the two strains used, with an inhibition percentage of more than 50%, for the samples with addition of cetyltrimethyl ammonium bromide. For the ZnO and CuNPs samples, the obtained results suggest a moderate antibiofilm activity for both strains tested, P. putida and B. subtilis. PI_BF values obtained in antibiofilm testing suggest the need for optimization of nanoparticles and an additional investigations in order to increase the effectiveness of their biological action. 

Quantifiable results

• 4 New jobs created in research (2 at IC - ICECHIM, 1 at P4 - UB, 1 at P2 - INCEMC);

• 2 Experimental models nanoparticle syntheses (1 IC - ICECHIM, 1 P4 - UB);

• 3 Sets of analysis bulletins (1 P3 - UPB, 1 P5 - ICMPP, 1 P2 - INCEMC);

• 1 Specific test protocol (1 P1 - ICCF);

• 3 Scientific communications (1 IC - ICECHIM, 1 P4 - UB, 1 P1 - ICCF). 

Project 3: “Biomaterials from aliphatic polyesters and micro- and nano-cellulosic modifiers for short-life and disposable products” (ESTERPACK)

Stage 1-3: Development of new bio-alloys from aliphatic polyesters and thermoplastic bioelastomers 

The “Biomaterials from aliphatic polyesters and micro- and nano-cellulosic modifiers for short-life and disposable products” (ESTERPACK) is an innovative and complex project, which aims to develop a new material (a bionanocomposite) and a new synthesis method that can be easily scaled up. The biomaterial obtained within this project is intended for food or drugs packs, single-use medical instruments, medical sample storage containers, short-life or disposable products in large quantities that are difficult or impossible to recover. This project aims to replace petroleum-based polymers with recyclable polymers from renewable resources, to reduce the pollution caused by using plastic packaging. Due to the realization of products from biodegradable polymers, their impact on the environment is substantially reduced.

Polyhydroxyalkanoates (PHAs) present many of the requirements of alimentary and medical packing materials. They are susceptible to hydrolytic degradation in the environment and alive systems, and can be processed with equipment used for polyolefin or other synthetic plastic materials that present a property set similar to conventional plastics. Mechanical properties of PHA are dependent on the structure of the base monomers, as well as on the molecular weight of the polymers, varying between rubber-like elasticity and the rigidity of a crystalline textolite. Short link PHA can be characterized by its rigidity and fragility. Instead, the ones with 6-14 carbon atoms have properties similar to elastomers.

Thermoplastic polyurethanes can lead to very different properties (such as mechanical, flexibility and biocompatibility), depending on the nature of components that make up the soft segments, the hard segments or the chain extenders. The mechanical properties of the TPU can be adjusted by simply changing the ratio between flexible and rigid segments or by using reactants with different properties. For this reason, they are extremely interesting as packaging materials and medical devices that represents the target of this project.

Low thermal stability, low stability during processing and high brittle behavior are the main reasons, as well as the high price, that prevents the widespread use of PHA in the food packaging and medical products industry. The use of PHA elastomers with medium chain length with biodegradable sequences eliminate the disadvantages mentioned above, due to the use of polyhydroxybutyrate (PHB) modifiers in order to obtain bio-alcohols for packaging, including medical ones.

The project has two development directions: (i) manufacturing elastomeric PHA copolymers with a medium chain length and (ii) obtaining controlled synthesized polyurethanes, that present a component or several biodegradable components. Both procedures are designed to increase the flexibility and ductility, in order to eliminate the brittle character and to improve processing behavior of PHB/PHBV. The first approach, in which bio-alloys from aliphatic polyesters and mPHA modified with nanocellulose were obtained, use only renewable and 100% biodegradable materials.

            In stage I, the research report on the selection of strains producing elastomeric PHA and growing mediums specific for biosynthesis has been elaborated. The microbial biosynthesis of elastomeric PHA and fermentative biosynthesis of PHA model has been studied. Bio-alloys were obtained from aliphatic polyester and elastomeric polyhydroxyalkanoates, and analysis reports were made on the physical, structural and morphological characterization of obtained bio-alloys. Several types of polyurethanes elastomers with biodegradable sequences have been synthetized. The analysis reports on characterization of synthetized polyurethanes elastomers were attached and the nanocellulose functionalization method was presented. Next will be studied the development of a bionanocomposites materials from aliphatic polyesters with various modifiers and cellulose.

PROJECT 4: “Innovative Hybrid Materials with Photocatalytic Properties- FOTOMAH”

Stage 1-4: Identification of preliminary synthesis in order to obtain oxidic type photocatalytic structures.

At this stage of the project, the following activities were carried out:

1. Preliminary synthesis of the formation of TiO₂ structures by hydrothermal method;

2. Preliminary research on the identification of parameters for the synthesis of materials with TiO₂-dye (complex metal/polycycloketone class), by sol-gel process and by microwave-assisted hydrothermal process respectively;

3. Preliminary tests to observe: compatibility of the photocatalytic structures with the dye from complex metal/polycycloketone class, photocatalytic activity and antibacterial effect;

4. Dissemination of results through: participation at national/international conferences, article. 

- TiO₂ nanoparticles as such and doped with Ag and Fe were synthesized by the hydrothermal method at different autoclave temperatures.

- Materials with TiO₂ as such and sensitized with dye (phthalocyanine dye) were obtained by sol-gel process and by microwave-assisted hydrothermal process respectively, using different silane agents.

- Realized studies have confirmed that TiO₂ sensitized with phthalocyanine dyes show good results regarding photocatalytic degradation effect on organic dyes such as methyl orange and methylen blue.

- Study regarding the selection and adaptation of a method to assessing the antibacterial activity of thin film products obtained from materials with TiO₂ has been elaborated.  

Project 5 NEW DURABLE MATERIALS BASED PE BAZA IN RENEVOBLE POLYMERS  FOR 3D PRINTING (3D-LONG-LIFE)

Stage 1-5: Design, realization and characterization of new durable materials based on renovable polymers for 3-D printing

             The designing of new polymeric materials requires the simultaneous consideration of both the necessities of the targeted applications and of the specific techniques involved in their transformation into a finished product. Sustainability is defined as the property of polymeric materials to withstand the environmental stresses during lifetime so as not to endanger the proper functioning. Selection of the  polymers that can be used to achieve these materials requires consideration of the present strategy related to the new plastics economy which aims to replace fossil carbon (polymers from conventional resources) with renewable carbon (renewable polymers or chemically modified renewable polymers) through modern technologies. In this context, the goal of the project 40 -2018 / 5 (3D-LONG-LIFE) is to obtain new renewable, durable, polymeric materials compatible with 3D printing, possibly the third technological revolution in the world. The new polymeric materials will be realized by innovative methods of physico-chemical modification of polylactic acid through controlling the properties that insure the durability, namely breaking behavior (through balance rigidity - breaking energy absorption capacity) and thermal properties. PLA is a renewable polymer, with very good processability but with no durability properties. The innovative modification method involves controlling the morphological structure of polylactic acid by generating crystalline / amorphous variable ratios and, as the case may be, controlled crystallization rate, so that the energy absorbed by the material prior to breakage and thermal stability have values specific to durable applications. For this purpose, the renewable polymer will be modified with toughening modifiers and / or nucleation  and / or reinforcing / or stereo-complexing agents. In order to achieve 3D printing through the melted filament techniques, the melt of these new materials must have a flow speed that is characteristic to the profitable production procedures, knowing that the shear rates developed during extrusion do not exceed 100s-1.

In order to achieve the new durable materials, the project partners, who work as a team but each with well-defined responsibilities, have designed and have developed in 2018 the experimental models for obtaining and characterization of these materials. The partnership between the project partners is based also on close cooperation for the interpretation of own results and for the correlation of the materials properties with the modification method. In 2018, the partners have realized laboratory researches both to achieve the new materials (CO) and the characterization specimens  (CO) and  to characterize the new materials (P1, P2, P3, CO). The DSC thermograms (P1), the micrographs in polarized light (P2), the SEM micrographs (P3), along with the XRD diffractograms (P3)  and the  melt flow in Griffits spiral (P1) or in extensional field (CO) clearly highlights the stereo-complexation and/or the nuclear  and/or the reinforcement effects on which  the obtaining of the new, sustainable renewable materials, compatible with 3D printing are based.

The report briefly presents the partial results obtained by the project partners in 2018. The obtained results have shown both that the approached research direction is feasible and, during 2019, the characterization researchers with other methods (TEM etc.) will be continued. Also, next year, the correlating of functional properties with modification solutions, the study of the suitability of the new material with 3D printing, the selection of the interest formulations and the optimizing of the mechanical and thermal behavior according to the interests of the sustainable applications and of the method of the processing into finite product will be done. Depending on the results, other directions for increasing the sustainability of the PLA will be addressed.

The obtained results were disseminated by presenting 3 posters at an international symposium and a PhD dissertation, on the project subject, is underway. According to the evidences presented in the platform and the general manager declaration two jobs were created under legal conditions, as research assistants. The two posts have been launched by publishing on the sites www.euraxess.gov.ro and www.jobs.ancs.ro. Based on the results obtained, it is estimated that the indicators for  stage 1 have been fully achieved by all the partners. 

CONCLUSIONS

In PC1 it was performed a research study about the host- guest polymerization and 4 experimental studies, including analysis bulletins and characterization regarding the synthesis of inorganic structure, obtaining of polymer nanocomposites, cyclization and carbonization of the polymer, producing of cermic powder and presttting for potential applications in medicine, with 4 experimental models and 1 testing protocol for biocompatibility. In PC2 there were achieved 2 experimental models for nanoparticles synthesism 3 stes of analysis bulletins and 1 testing protocol for bactericide activity. In PC3 there were obtained biodegradable bio alloyses with increased ductility, it was performed a research study about the selection of suches  producing elastomeric PHA and specific media for biosynthesis, 4 experimental methods ( 1 for fermentative biosynthesis of PHA, 1 for bio alloyses, 1 for polyurethanes and 1 for bio cellulose functionalization), 3 sets of analytical bulletins and 1 charcterization study for the products. In PC4 it was performed 1 research study, 2 experimental studies about the obtaining of materials with photo catalytical oxidic structures  and 1 protocol for testing/ evaluation of the photodegradation, 2 laboratory procedures for TiO₂, 2 laboratory procedures for sol- gel synthesis in the presence of dye, based on 2 studies, 1 testing report and 1 anti bacterian analysis report. In PC5 There were verified the innovative concepts which are leading to the objectives realizing and there were obtained, by 3 D printing, durable materials based on removable polymers. There were achieved 3 experimental models  for producing of materials and their characterization by analytical bulletins, images, tests, etc.

Till now 12 ypung ACS were employed: 8 at ICECHIM, 3 at INCDEMC Timisoara and 1 at University of Bucharest. The legal conditions were fullfieled taking into account the statments of general directors and rector. The jobs were published on www.euraxess.gov.ro si www.jobs.ancs.ro.

The contests for other 6 new researchers were organized and the winers are already known for the other 6 new employees. The new employees will be maintained 2 years after the project accomplishment.

Annex 2 - Public Report Stage 2

Component Project nr.1: “Innovative process for synthesis of titanium nitride ceramics via composite polymer hybrids for biomedical application” - BIOTiN

Stage  2-1: “ Establishment of the experimental model (laboratory technology) for the production of titanium nitride ceramic powder via hybrid polymeric composites for prosthesis coatings"

BIOTiN project aims at developing,through an innovative manufacturing process, an original TiN ceramic powder, having high quality and performance parameters, suitablefor biomedical applications such as prostheses. In order to develop new advanced materials, the approachwill utilize pieces of integrated technology, processing techniques that are used in industrial appliances, but also nanotechnology specific methods. The purpose of the project is to obtain titanium nitride ceramics from hybrid polymeric composites by starting from a synthesized, porous inorganic structure. The technology proposes a new approach for developing materials that generate a unique class of ceramics with outstanding characteristics, such as improved mechanical and thermal properties, in comparison to other conventional similar materials.

At this stage, therewere elaborated: 6 Research reports and 4 technologies on: (1)Experimentation and elaboration of the synthesis technology of the inorganic template, mesoporous TiO₂ by the optimal process; (2)Experimentation and development of the technology for the production of polymeric nanocomposites by host-guest polymerization; (3)Corelarea datelor experimentale privind structura, cu propriet??ile materialelor ob?inute prin caracterizarea complex? a materialelor în toate etapele de dezvoltare a modelului experimental.Correlation of the experimental data regarding the structure, with the properties of the materials obtained by the complex characterization of the materials in all the stages of the experimental modeldevelopment. Continuous monitoring of the synthesis processes by extensive characterization of the initial and intermediate products; (4)Experimentation and elaboration of the technologies of carbonization of the polymeric component of nanocomposites; (5)Experimentation and elaboration of the technology forTiNproduction by the carbothermal method via nanonocomposites; (6)Performance evaluation induced by TiN-based ceramic powder for use in biomedical applications. 3 research jobs were created (1atP1 - ICCF, 1 atP3 - UPB, 1 atP5 - ICMPP). According to the evidence presented on the platform, 3 research jobs were created, by employing 3 research assistants under legal circumstances, in agreement with the declaration of the general manager. The availability of the positions has been made public on www.euraxess.gov.ro and www.jobs.ancs.ro. 16 scientific communications have been achieved and the results have been disseminated also through 2 national patent applications and 3 papers in ISI journals (2 submitted - ICECHIM, UPB and 1 published - UB). There were also 3 training stages (research) conducted between the partners: ICECHIM, UPB and ICMPP.

                Based on the obtained results, it can be noticed that the performance indicators programmed for Project 1 in Phase2have been fully achieved.

                The project will continue in the next phasewith the demonstration of the utility and the functionality of the developed technologies, and the optimization of the technologies.

Component Project No.2:“Nanostructured hybrid materials obtained by«eco-fiendly»methods for the surfaces protection against damages caused by micro-organisms and pollutants”- MAHIN

Stage 2-2:“Preparation and characterization of nanostructured hybrid materials by «eco-friendly» non-polluting methods

Component project no.2 (PC_2) aimed within the second stage the development by «eco-fiendly» methods of new hybrid coatings with multiple functionality, with antibacterial and self-cleaning effect, to protect the various surfaces against the effects of pollutants and biological attacks with pathogens. During the second stage, the planned activities were carried out to fulfill the proposed objectives and were carried out activities aimed to obtain and characterize the nanostructured hybrid materials by non-polluting methods - «eco-friendly». At this stage of the project two scientific objectives were envisaged:

                - A. Optimization of the parameters for obtaining metallic nanoparticles (Cu, Ag, ZnO, CuO) with superior antibacterial properties by «eco-friendly» methods - the bioextract assisted method - and their characterization;

                - B. Obtaining of the nanostructured hybrid materials based on of metallic and oxide nanoparticles combinations in film-forming silane matrices and their characterization.

                Therefore, it was considered the preparation of intelligent materials for coatings with advanced properties of protection against the development of biofilms and deposition on different surfaces. Also, an area of very important interest in the development of modern materials was the use of various types of nanoparticles, which have antibacterial effect.

                Cu, CuO, Ag and ZnO nanoparticles have been developed in the project, which have promising advantages as non-expensive alternative to other biocidal agents. In order to achieve this first objective of the stage, the following activities were carried out: A2-2-1 “Obtaining vegetable extracts for the «eco-friendly»synthesis of metallic particles”; A2-2-2 “Obtaining metallic nanoparticles (Ag) with superior antibacterial properties through «eco-friendly» methods - the bioextract assisted method”; A2-2-3 “Obtaining metallic nanoparticles (Cu) with superior antibacterial properties by«eco-friendly»methods - the method assisted by bio-extracts”; A2-2-4 “Obtaining metal oxide nanoparticles (ZnO, CuO) with superior antibacterial properties by«eco-friendly» methods (in supercritical and with plant extracts)”; A2-2-5 “Obtaining metal oxide nanoparticles (ZnO, CuO) with superior antibacterial properties by«eco-friendly» methods (in supercritical and with plant extracts)”; A2-2-6 “Optimization of the parameters for obtaining the metal oxide nanoparticles (ZnO, CuO) by the Design of Experiment method (DoE)”; A2-2-7 “Characterization of obtained nanoparticles (Cu, Ag, ZnO, CuO) by optimized methods: FT-IR, UV-VIS”;A2-2-8 “Characterization of obtained nanoparticles (Cu, Ag, ZnO, CuO) by optimized methods: XRD, TEM” and A2-2-9 “Characterization of obtained nanoparticles (Cu, Ag, ZnO, CuO) by optimized methods: XRD, SEM”.

                All the proposed activities were successfully carried out, according to the planned schedule, and the results were materialized in: 1 scientific stage report; 1 stage financial report; 1 audit report; 6 new jobs created in research; 5 training (research)/ training and work visits; 1 laboratory technology; research services offered (realized) by using the available research infrastructure; common RDI program correlated with the institutional development plan of each partner (collaboration for the submission of research projects; participation in annual symposia).

                The project will continue in the next stage with the optimization of the nanostructured hybrid materials and with thefunctionality demonstration of the obtained coatings.

Component Project nr. 3: Biomaterials from aliphatic polyesters and micro- and nano-cellulosic modifiers for short-life or single-use products (ESTERPACK)

Stage 2-3: Development of bio-nanocomposites from aliphatic polyesters with various modifiers and cellulose

Within this stage, the elastomeric polyhydroxyalkanoate product with controlled composition and its biosynthesis technology was developed. Several representative variants of elastomeric polyhydroxyalkanoates were analyzed, both morphologically and structurally, as well as the composition of the copolyesters.Bioalloys from polyhydroxybutyrate and representative variants of elastomeric polyhydroxyalkanoates were made by melt blending, which were characterized in terms of thermal, mechanical and morphological properties. The optimum recipefor elastomeric polyhydroxyalkanoate was selected and the technology for the obtaining of the bioalloy with elastomeric polyhydroxyalkanoate was developed.Bioalloys of polyhydroxyalkanoates and thermoplastic polyurethanes with biodegradable sequences were also made. Bioalloys containing polyurethanes were characterized in order to select the best polyurethane and the composition of the bioalloy. Bioalloys containing the optimum variant of polyurethane and nanocellulose were obtained and characterized in terms of rheological, mechanical and physical-chemical analysis. The work will continue with the patenting of the results with applicative interest.

Component project  nr. 4:“Innovative Hybrid Materials with Photocatalytic Properties”

Stage 2-4: Realization and characterization of nanostructured hybrid materials/films with photocatalytic effect

At this stage of the project, the following activities were carried out: 1) Realization of oxide-type structures (TiO₂ doped with metallic ions) with photocatalytic activity in the visible domain; 2) Synthesis and characterization of the oxide-type photocatalytic sol-gel materials, doped with dyes (metalliccomplexes/polycycloketonesclass) and of the oxide-type photocatalytic materials obtained through the hydrothermal process assisted by microwave;3) Testing the antimicrobial effect of the oxide-type photocatalytic materials doped with dye; 4) Realization of coatings on different surfaces types (glass, plastic), using hybrid materials,doped with dye,obtained by sol-gel process and through the hydrothermal process assisted by microwave; 5) Obtaining the pelicogenic materials by incorporating of photocatalytic materials into water-based paint formulations; 6) Testing and evaluation: photocatalytic effect for coatings realized onto different types of surfaces (glass, plastic), photodegradation resistance of binders in paints prepared in the presence of photocatalytic materials;7) Dissemination of results through: participation at national/international conferences, publication of articles.

In this stage, it were obtained: 2 types of non-doped TiO₂ nanocrystals, 4 types of TiO₂ nanocrystals doped with Ag and 4 types of TiO₂ nanocrystals doped with Fe (2% and 3% concentrations, respectively) synthesized by the hydrothermal method, at different autoclaving temperatures (150 °C and 200 °C).

Oxide-type photocatalytic materials doped with dyes (metallic complexes/polycycloketonesclass) were synthesized by the sol-gel method. Sol-gel solutions were synthetized in acidic medium, using silane precursors with different hydrophobic functional groups. These solutions were deposited onto glass and plastic surfaces in order to achieve coatings with anti-reflective, self-cleaning, photocatalytic effects. Homogeneous and uniform films, with hydrophobic properties, were obtained. The photocatalytic films were realized using dispersions of non-doped TiO₂ and TiO₂ sensitized with dye (iron phthalocyanine).For testing of photocatalytic effect, a methylene blue solution was used as a standard contaminant. The absorbance of the films was monitored by Vis spectrometry at different time intervals, by irradiation with visible light.

The TiO₂ films modified with nano-structured metals were realized by the hydrothermal process assisted by microwave. The preparation method of the catalyst ensured a uniform deposition and incorporation of the transition metals in the TiO₂ films.

Recipes have been formulated to obtain paints with self-cleaning effect based on TiO₂-type photocatalysts sensitized with dyes with mixed azomethine-phthalocyanine chromophore. Two paints were obtained - one interior paint based on acrylic polymer and the other exterior paint based on acryl-styrene polymer. The tests regarding the self-cleaning activity show that the photocatalysts used have a relatively similar behavior, achieving the destruction of the methylene blue dye in about 3 days.

Dispersions of non-doped TiO₂ and TiO₂ sensitized with dye (iron phthalocyanine) presented an insignificant antimicrobial effect,tested as such on Gram-negative microbial strains Escherichia coli (ATCC 8739) and Candida albicans (ATCC 10231), at a microbial inoculum concentration of 10⁵ufc/ml. The bactericidal effect of TiO₂-Ag and TiO₂-Fe nanocrystals, synthesized by the hydrothermal method, was evaluated using cultures of bacteria belonging to the Escherichia Coli. Analyzes show that TiO₂-Ag nanocrystals exhibit better bactericidal efficiency than TiO₂-Fe nanocrystals.

All the proposed activities were successfully achieved, and the results were materialized in: 1 scientific&financial stage report; 1 audit report; 4 laboratory methodologies (hydrothermal method sol-gel process, hydrothermal process assisted by microwave, recipes for obtaining paints); 1 evaluation/testing report of the antimicrobial effect, the photocatalytic effect for the coatings realized on different surfaces, the photodegradation resistance of the films; 4 published articles; 1 accepted article; 15 scientific communications; work visits.

Component Project nr. 5 : New durable materials  based on renewable materials for 3D Printing (3D-LONG-LIFE)

Denumire Etapa 2-5: Achievement of new durable materials based on renewable polymers  compatible with 3D printing. Material complex characterization 

The design of the new polymeric materials implies the simultaneous consideration of both the requirements of the applications of interest and those characterising the transformation into a finished product technique. The purpose of the project 40 -2018 / 5 (3D-LONG-LIFE) is the achieve new renewable materials, durable, compatible with 3D printing considering the physico-chemical modification of polylactic acid, renewable polymer with very good melt-processbiity but without durability properties. Thus, innovative methods that allow the management of the durability properties through controlling the balance of rigidity - absorption capacity of breaking energy and thermal behavior were selected. The methods of controlled crystallization that allow the organize of the morphological structure by generating variable crystalline / amorphous ratios so that the absorbed energy before breaking and the thermal stability to have programmed values, specifically for the durable applications, were considered. For this purpose, the regenerable polymer was melt compounded with nucleation agents and / or reinforcing agents and / or stereo-complexants. The paper presents the 2019 results obtained in the stereocomplexing of polylactic acid in different dextro-levo compositional ratios so that, depending on the intensity of the specific (+) / (-) attractions, the establishment of nucleation centers leading to materials of interest for sustainable applications to be possible.

                The stereocomplexed compounds were obtained by CO and the new morphologies were characterized by all partners: CO- transmission electron microscopy (TEM) (works in progress), P2 - polarized light microscopy (POM), P3 - X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM). The chemical structure of stereocomplexed compounds was studied by CO by Fourier Transformed Infrared spectroscopy (FTIR). CO has also identified, together with P1, the thermal properties through Differential Scanning Calorimetry (DSC), after removing the thermal history, both polymers used for stereocompletion and stereocomplexed compounds. P2 measured both the molecular masses of the stereocomplexed polymer, before and after the melt compounding as well as the dynamo-mechanical properties of the selected compound as having the maximum stereocomplexing effect. The rheological properties of the melts were studied by CO (extensional field flow) and P1 (injection spiral flow). P1 also identified the mechanical properties, mainly the tensile strengths. In order to test the flow properties, CO performed the experiments on shapeing the new materials as filament and the 3D printing behavior of the obtained filament. The filament ovality was studied by the P3 partner by visualizing the SEM mirographes of their cross-section and the defects of the 3D printed items obtained using the new filaments were analyzed by the P1 patener using the images obtained at the Computer Tomograph (CT). The complex characterizations of material have led to very good correlations of structure- properties characterizing the new compounds which have been used in the material selections. The analysis of the results, their interpretation and the decisions regarding the continuation of the works was carried out by the CO together with all the partners P1, P2, P3. The results obtained in 2019 showed that the addressed research direction is feasable, following in the next stage to be  continued with characterization works  considering other methods (TEM, etc.), and with studying the suitability of the new materials for 3D printing through the molten filament method, the selection of the variants of interest and the optimization of the mechanical and thermal behavior of the selected materials according to the interests of the durable applications and the processing into finished product by 3D printing.

The obtained results were disseminated by publishing an article, presenting 7 posters at 4 international symposiums and a communication at a work shop. The development of a doctoral thesis with a topic related to the subject of the contract is also in progress. The two young ACS who started from 1.01.2019 have resigned on August 12, 2019 because of their own conclussions that they are not compatible with the research work field and that they want to develop careers in other fields. For this reason, starting with 07.10.2019, two other young ACS were hired, who currently occupy the positions 164 and 165 in the list of the contract staff. All the employment documents are legal and are presented in the contract platform. Based on the obtained results it can be appreciated that all result indicators have been fully achieved.

Annex 3 - Public Report Stage 3

 PC1 BIOTIN

•          The obtained results show that mesoporous TiO₂ synthesized by the sol-gel method, with Pluronic surfactant, has the necessary characteristics for use in obtaining titanium nitride ceramics. Also, mesoporous TiO₂ synthesized by the hydrothermal method in the microwave field, at a temperature of 200 ^oC, with hexadecylamine surfactant, has the optimal characteristics for use in laboratory experiments to obtain titanium nitride ceramics.

•          Hybrid composites were obtained by polymerizing a carbocatenary polymer, acrylonitrile, in mesoporous titanium, in which both the sort of titanium oxide and the concentration of organic compound were varied. The FTIR results of the obtained composites, with a different content of organic compound, showed all the bands characteristic of the presence of the guest vinyl polymer. The thermal stability of the constrained polymer in the inorganic structure has been improved compared to the pure polymer. The TGA analysis also provided important information on the carbonization process, which can be used later to obtain ceramic materials. The prepared hybrid systems, regardless of the type of used titanium dioxide, have slightly higher values ??of the storage module compared to the reference PAN, except in the case of composite 30MZ48. This shows that the titanium oxide increases the elasticity of the system over the entire temperature range. Also, the synthesized composites generally have two glass transition temperatures, which proves the formation of the polymer both in the pores of the inorganic structure and on its surface. The technology for the production of polymeric nanocomposites has been validated. Research to demonstrate the functionality and utility of technology for the production of polymeric nanocomposites had a dual purpose: on the one hand to verify the reproducibility of the technology, and on the other hand to make available to partners ICMPP and UPB nanocomposites necessary for the study of carbonization and nitride synthesis. titanium. It was found that the technological process has a good reproducibility even when using another type of mesoporous titanium. Also, working in conditions outside the field established as optimal in laboratory technology, it was found that high-performance ceramic powders can be obtained in the end, which proves the high elasticity of the developed technology, both composite preparation technology and polymer carbonization technology.

•          A demonstrator was developed to demonstrate the carbonization technology carbon chain polymer (PAN) from the TiO₂ pores. The tests show the need to simultaneously perform precision test heat treatments at high temperatures and immediately to characterize by various methods of precursors, intermediate and final products by: WAXD - Wide Angle X-Ray Diffraction, AFM-Atomic Force Microscope, EDAX. DSC.

•          The analysis of X-ray diffractograms shows that the used heat treatment (with the appropriate steps) leads to the conversion of hybrid inorganic-organic nanostructures based on porous titanium oxide into TiN, in case of using the inorganic matrix MZ2 - sol-gel-surfactant-Pluronic method (400 ^oC / 4h) and MZ10 (sol-gel method - with PVP). In the case of both sets of samples (MZ2 and MZ10) with different content of inorganic material, the process was optimized and validated to obtain TiN type ceramics by the carbothermal reaction at 1400 ^oC in nitrogen flow. For a better quality of the obtained samples, it is recommended to use nanocomposites with higher content of inorganic material in the initial samples. The method of preparing the inorganic matrix is ??important for obtaining high purity TiN ceramics.

•          The prepared TiN samples were tested for cytotoxicity by the methodology recommended by ISO 10993 - extraction method and contact method. The results of the cytotoxicity tests performed by the extract method reveal that under the described experimental conditions, the samples lack cytotoxicity. The contact method shows a slight inhibition of cellular display and adhesion, following exposure for 24 hours to S13 (S1 bis) and S14 (S2 bis), but cell viability is not significantly affected, which determines the classification of the products as lacking cytotoxicity, under the described experimental conditions.

PC2 MAHIN

Component project no. 2 (PC_2) aims in the third stage the development of new hybrid materials with multiple functionality, with simultaneous antibacterial and self-cleaning effect, to protect various surfaces against the effects of pollutants and biological attacks with pathogens.

            The scientific objective of the 3rd stage was to obtain by nanoformulation and conditioning of new generation nanostructured hybrid materials, based on combinations of metal and oxide nanoparticles in film-forming matrices with various functionalizations, which can be applied to lithic, metal or paper surfaces.

            In order to fulfill the scientific objective of the stage, the following activities were carried out: Activity 3-2-1 “Optimized synthesis of nanostructured hybrid materials with Cu nanoparticles and Ag nanoparticles”; Activity 3-2-2 “Optimized synthesis of nanostructured hybrid materials with ZnO nanoparticles” part I; Activity 3-2-3 “Optimized synthesis of nanostructured hybrid materials with ZnO nanoparticles by LbL method” part I; Activity 3-2-4 “Characterization of optimized nanostructured hybrid materials and obtained coatings by FT-IR, RAMAN methods” part I; Activity 3-2-5 “Characterization of the obtained coatings by the AFM method” part I; Activity 3-2-6 “Characterization of optimized nanostructured hybrid materials and obtained coatings by SEM-EDX method” part I; Activity 3-2-7 “Testing the functionality of coatings made with nanostructured hybrid materials for the protection of lithic, metallic and paper materials against chemical pollutants (SO₂, CO₂, NO₂)” part I; Activity 3-2-8 “Testing the functionality of coatings made with hybrid nanostructured materials for the protection of lithic and paper materials against bacteriological attacks” part I.

            All the proposed activities were carried out successfully, according to the planned calendar, and the results were materialized in: 1 stage scientific report; 1 stage financial report, 2 internships (research) / training and working visits, 1 laboratory technology; research services provided (performed) by using the available research infrastructure; joint RDI program correlated with the institutional development plan of each partner (collaboration for the submission of research projects; participation in annual symposia).

            The project will continue in the next stage with the optimization of nanostructured hybrid materials and the demonstration of the functionality of the obtained coatings - part II.

PC3 ESTERPACK

The ESTERPACK project aims to develop bionanocomposites for the packaging industry to obtain short life-cycle products. In the third stage, bionanocomposites containing bioelastomer obtained by microbial synthesis and cellulose modifier were developed, which were characterized from a thermal, mechanical and morphological point of view for the selection of the optimal version (experimental model of bionanocomposite). For evaluating the behavior of selected bionanocomposite on specific processing equipments, it was tested by extrusion-blow molding, specific for obtaining packaging. The tests allowed the optimization of the extrusion-blowing conditions to obtain a continuous tube and to establish the technological conditions for the processing of bionanocomposite by extrusion-blow molding. Rheological and morphological tests allowed the optimization of the polyurethane bioelastomer synthesis technology and the selection of the optimal melt processing conditions of nanocomposites containing polyurethane bioelastomer. Biodegradability tests were performed on the selected nanocomposites and the behavior was evaluated for various conditions of use. During this stage, the project participants (ICECHIM, ICCF, UPB, ICMMPP and UB) developed 6 characterization reports and 2 sets of analysis bulletins, the optimized technology for obtaining polyurethane with biodegradable segments and the processing of bionanocomposite, they have published 2 articles in ISI journals and filed 2 patent applications with OSIM.

PC4 FOTOMAH

At this stage of the project, the following activities were carried out: 1) Optimization of the synthesis methodology for some oxide-type photocatalyst structures with sensitization in the visible domain; 2) Optimization, testing, evaluation of the sol-gel process and of the hydrothermal process assisted by microwave, respectively, for obtaining the oxide-type photocatalytic materials doped with dye from the metallic complexes/polycycloketones class; 3) Characterization of optimized photocatalytic hybrid materials doped with dye from the metallic complexes/polycycloketones class; 4) Optimization of paint recipes with self-cleaning properties; 5) Study of the antibacterial effect of photocatalytic hybrid materials doped with dye from the metallic complexes/polycycloketones class; 6) Dissemination of results through: participation at national/international conferences, publication of articles (ISI and BDI), presentation of a patent request at the invention event; 7) Protection of intellectual property rights regarding the obtaining of innovative hybrid materials/coatings with photocatalytic properties (1 OSIM patent request).

In this stage, TiO₂ doped with Ag or Fe (2% and 3% concentrations, respectively) were synthetized by the hydrothermal method, at temperature of 150 °C and the filling degree of 80%.

The sol-gel process was optimized and evaluated for obtaining the photocatalytic materials - TiO₂/dye (iron phthalocyanine). By optimizing the parameters of sol-gel synthesis, photocatalytic films - TiO₂/dye type were realized on different substrates (glass, plastic). The methylene blue solution was used in order to perform the photodegradation experiment. The films were exposed to a UV lamp and samples were taken at various time intervals. The results showed that the absorbance gradually decreases with increasing exposure time.

Based on the results from the previous stages, the parameters of the hydrothermal process assisted by microwave were optimized. Thin films were realized on different substrates (glass, quartz and plastic) in order to evaluated the photocatalytic materials - TiO₂/dye type (iron phthalocyanine). The photocatalytic performance of TiO₂/dye materials was evaluated by methyl blue degradation after exposure to a UV lamp at different exposure times and absorbance analysis of UV-Vis spectra to estimate the degradation kinetics. The degradation efficiency of the dye in contact with photocatalytic films and in the presence of UV light, reaches a maximum efficiency of 93.4% after 8 hours of irradiation.

Some additives (wetting agents, dispersing agents and rheology modifiers) have been tested in order to increase the resistance to creasing in particular as well as to improve the washability and adhesion properties. Finally, the optimized laboratory recipes for interior and exterior paints were obtained, which retain their self-cleaning properties for a long time.

The antibacterial effect was evaluated for 3 samples synthesized with silane precursors and using different powders (TiO₂ undoped, TiO₂ doped with Ag, TiO₂ sensitized with dye (iron phthalocyanine)) against two bacterial strains, a Gram-negative species Escherichia coli ATCC 8739 and a Gram-positive species Staphylococcus aureus ATCC 6538. The obtained results showed that, depending on the type of powder used, the samples present antimicrobial activity classified as "weak" or "moderate" on the bacterial strain.

All the proposed activities were successfully achieved, and the results were materialized in: 1 scientific stage report; 1 stage financial report; 1 audit report; 4 optimized laboratory methodologies: hydrothermal method (INCEMC), sol-gel process (ICECHIM), hydrothermal process assisted by microwave (UB), paint recipes with self-cleaning properties (UPB); 1 evaluation/testing report regarding the obtaining of oxide-type photocatalytic materials doped with dye by the sol-gel process (ICECHIM) and by the microwave-assisted hydrothermal process (UB), structural analyzes of photocatalytic materials doped with dye (ICMPP), antibacterial effect (ICCF), self-cleaning properties (UPB); 4 published articles (ICECHIM, UB, ICMPP); 2 proceeding papers (ICECHIM, UPB); 8 scientific communications (ICECHIM, INCEMC, UB, UPB, ICMPP); 1 OSIM patent request (ICECHIM); 1 presentation of a patent request at the invention event (INCEMC).

PC5- 3 D-LONG-LIFE

The designing of new polymeric materials involves the simultaneous consideration of the requirements both for applications of interest as well as for processing technique into finished product. The purpose of the project 40 -2018 / 5 (3D-LONG-LIFE) is to create new, sustainable, renewable, polymer materials, compatible with 3D printing. The method for producing these materials is based on the physico-chemical modification of polylactic acid, a renewable polymer with very good melt processability but without durability properties. To achieve this goal, those innovative methods were selected that allow the control of durability properties based on the balance of rigidity - capacity to absorb breaking energy and on the thermal behavior. The methods of controlled crystallization were considered, which allow the control of the morphological structure by generating variable crystalline / amorphous ratios so that the energy absorbed by the material before breaking and its thermal stability have predetermined values, specific to sustainable applications. The regenerable polymer was compounded with nucleating agents and / or reinforcing agents and / or stereo-complexing agents. The elaborated report presents the results obtained in 2020 related to the study of the compatibility of the new materials with 3D printing and to the correction of the formulas for including the modification of the melting properties in the melt of the variants made by stereo complexing the polylactic acid. This group of materials prevailed in the final material selections. It was observed that depending on the intensity of the (+) / (-) attractions specific to some dextro-levo compositional variants, nucleus centers appear that lead to materials of interest for sustainable applications.

CO made filaments from the selected material variants and tested the 3D printing behavior. It identified the influence of printing and melt flow conditions on the adhesion between the layers deposited by this process and the quality of the products obtained by printing. It performed all the work of correcting the modification formulas according to the material properties and the 3D printing behavior and, together with all the other partners in the project, it performed complex material characterizations. In order to correct the CO modification formulas, the main aim was to accentuate the stereo complexing effect so as to increase the number of stereo complexing centers and thus the control over the morphologies and therefore over the functional properties of the new materials. Through the works carried out, CO collected the scientific and technical data necessary for the definition of the modification formulas and for the elaboration of the laboratory technology. The new compositional variants were characterized structurally, morphologically and functionally by determining the mechanical, thermal and rheology properties in the melt (P1, CO), dynamo-mechanical (P2), polarized light morphologies (P2), XRD and SEM morphologies (P3, CO ). The complex characterizations of the material led to very good correlations between structure and properties based on which, material selections were made. The analysis of the results, their interpretation and the decisions regarding the continuation of the works were made by CO together with all partners P1, P2, P3. The results obtained in 2020 showed that the research direction approach is correct, so that in the next stage the modification formulations will be finalized and the laboratory technology for the realization of new renewable, sustainable materials, compatible with 3D printing will be set up.The obtained results were disseminated by sending for publication 4 articles, presenting 7 posters at 4 international symposia and a communication at a workshop. The elaboration of a doctoral thesis with a subject related to this contract is also in progress. One of the two young research assistant (RA) employed on 07.10.2019 resigned on June 24, 2020 due to interest in a multinational company. The winner of the new competition organized in August 2020 refused the position on the day she had to get hired because she preferred another position that suited her better (position won after a competition held in the same period). The vacancy position was filled after the competition held on November 18, 2020. The second RA position has already become permanent since 02.11.2020 and the salary coverage comes from the other contracts of the team. Based on the results obtained, it is estimated that all the result indicators scheduled for stage 3 of the project have been fully realized and that the works will be completed during stage 4 of 2021.

Annex 4 - Public Report Stage 4

PC1- BIOTIN

New mesoporous materials, based on TiO₂, were synthesized. For this purpose, the 2 synthesis technologies, elaborated at laboratory scale, within the previous stages, were applied: Sol-gel method (SG) and hydrothermal method in microwave field (MW).

           We worked both without surfactant and with surfactant.

           It was found that the pore diameter is around 8 nm, with exceptionally large specific surfaces (exceeding 100 m²/g)

           Thus, the 2 technologies to produce mesoporous titania were validated.

•           Hybrid composites were obtained by polymerizing a carbocatenary polymer, acrylonitrile, in mesoporous titania, in which both the sort of titanium oxide and the concentration of organic compound were varied. In addition, the soaking and polymerization time were varied in order to optimize their production technology.

•           The FTIR spectra of the composites presented all the peaks characteristic to the presence of the guest vinyl polymer, as well as to the inorganic host

•           The thermal stability of the constrained polymer in the inorganic structure has been improved, compared to the pure polymer. The TGA analysis also provided important information on the carbonization process which was subsequently used to obtain new ceramic materials with improved properties.

•           The technological process has a good reproducibility both in the case of MZ2 titania and in the case of MZ48 titania.

•           The technology of composite production has been optimized by reducing the soaking time but also the polymerization time, so the process requires a shorter time and a lower cost.

•           A good flexibility of the laboratory technology was found.

•           During the project stage, the activity of disseminating the results obtained in this stage was carried out.

Hybrid polymer materials, regardless of the type of titanium used and the soaking and polymerization time, have slightly higher values of the storage modulus, as compared to the reference PAN. This shows that the used titanium oxide increases the elasticity of the system over the entire temperature range. Also, the synthesized composites have two glass transition temperatures, the first significantly higher and the second slightly higher than pure PAN, proving the formation of the polymer both in the pores of the inorganic structure and on its surface.

DSC analysis showed an increase in the thermal stability of hybrids (conferred by mesoporous titania) compared to the reference polymer and it was shown that optimizing the technology by shortening soaking time and polymerization time does not affect the thermal properties of hybrids, as the analysis shows similarities between composites.

Regarding the carbonization of the carbocatenary polymer, after processing and analyzing the diffractograms for the samples from all intermediate and final stages and comparing them to the results from stage 3/2020, it can be concluded that, within the experimental errors, the results are perfectly reproducible. This finding gives us the certainty of a good reproducibility in the case of an industrial technology.

Based on the results obtained in this stage, referring to the optimization of the process of TiN obtaining via polymeric nanocomposites, by the carbothermal method, the following conclusions were drawn:

-        The best porous matrix, used to obtain TiN type ceramics, following the carbothermal reaction, at 1400 ⁰C, under nitrogen flow, is MZ2

-        The validated and demonstrated thermal treatment represents a viable method of TiN production by the carbothermal method, starting from hybrid inorganic-organic nanostructures based on porous titania of MZ2 type

-        - The Rietvield refining showed that: the network constant for the TiN phase has similar values for all samples and that a higher concentration of TiO2 in the inorganic-organic hybrid nanostructures leads to a higher average effective size of the crystallite.

-        the method of preparing the inorganic matrix is important for obtaining high purity TiN ceramics.

Titanium nitride samples prepared from 20MZ48 and 30MZ2 were tested for cytotoxicity by the methodology recommended by ISO 10993 - extraction method and contact method.

The results of the cytotoxicity tests performed by the extract method and the contact method revealed that under the described experimental conditions, samples 20MZ48 and 30MZ2 are devoid of cytotoxicity.

The contact method shows a slight inhibition of cellular display and adhesion, after exposure for 24 hours to 20MZ48 and 30MZ2, but cell viability is not significantly affected, which determines the classification of products as lacking cytotoxicity, under the described experimental conditions.

PC2 - MAHIN

Component project no. 2 (PC_2) aims in the fourth stage the development of optimized mono- and bi-layer hybrid coatings, with simultaneous antibacterial and self-cleaning effect, to protect various surfaces against the effects of pollutants and biological attacks with pathogens.

            The scientific objective of the 4th stage was to continue the activities for obtaining nanoformulation and conditioning of new generation nanostructured hybrid materials, based on combinations of metal and oxide nanoparticles in film-forming matrices with various functionalizations, which can be applied to lithic, metal or paper surfaces.

            In order to fulfill the scientific objective of the stage, the following activities were carried out: Activity 4-2-1 “Optimized synthesis of nanostructured hybrid materials with ZnO nanoparticles” part II; Activity 4-2-2 “Optimized synthesis of nanostructured hybrid materials with ZnO nanoparticles by LbL method” part II; Activity 4-2-3 “Characterization of optimized nanostructured hybrid materials and obtained coatings by FT-IR, RAMAN methods” part II; Activity 4-2-4 “Characterization of the obtained coatings by the AFM method” part II; Activity 4-2-5 “Characterization of optimized nanostructured hybrid materials and obtained coatings by SEM-EDX method” part II; Activity 4-2-6 “Testing the functionality of coatings made with nanostructured hybrid materials for the protection of lithic, metallic and paper materials against chemical pollutants (SO₂, CO₂, NO₂)” part II; Activity 4-2-7 “Testing the functionality of coatings made with hybrid nanostructured materials for the protection of lithic and paper materials against bacteriological attacks” part II.

            All the proposed activities were carried out successfully, according to the planned calendar, and the results were materialized in: 1 stage scientific report; 1 stage financial report; 1 audit report; 2 published ISI papers; 1 patent request; research services provided (performed) by using the available research infrastructure.

PC3 - ESTERPACK

The PC3 ESTERPACK project aims to develop bionanocomposites to obtain products with a short life for the packaging industry. In this final stage, the bionanocomposites type PHB/mPHA/NC (mPHA - medium chain length polyhydroxyalkanoate) and type PHB/PU/NC (PU - polyurethane with biodegradable sequences) were characterized in terms of rheological properties and morphology, as well as soil biodegradability and usage conditions. Thus, two representative polyurethane samples with different flexibility and different content of biodegradable soft segments (SS), one with a content of ~ 10% SS (PUbio1) and the other with a content of 25% SS (PUbio5) were used to obtain bionanocomposites N1 and N5 containing 10% PU and 2% nanocellulose (NC). The best rheological behavior and the most favorable morphology were observed in the case of N5 (PHB/PUbio5/NC ) nanocomposite, the selected version. Nanocomposite N5 has very good thermal, mechanical and morphological properties that indicate it for the packaging field. The use of this polyurethane elastomer and nanocellulose allowed the reduction of PHB brittleness, the main obstacle to the use of this polymer in packaging.

The microstructure of PHB/mPHA/NC biocomposites containing PHO (polyhydroxyoctanoate) or PHN (polyhydroxinonanoate) as bioelastomer and 5% nanocellulose was analyzed by SEM, optical microscopy and computed tomography, which showed a good dispersion of the elastomeric phase in these biocomposites. The optimal varsions of PHB/PU/NC and PHB/mPHA/NC biocomposites, to serve as models, were selected by correlating the microstructure and the most important properties: glass transition temperature determined by dynamic mechanical analysis and differential scanning calorimetry, onset decomposition temperature, decomposition temperature, melting and crystallization temperatures, storage modulus. Regarding PHB/mPHA/NC type biocomposites, the more balanced thermal and mechanical properties of PHO led to a good extrusion-blowing behavior of the biocomposites containing this type of bioelastomer. Regarding PHB/PU/NC type biocomposites, it was found that the PUBio5 bioelastomer has a flexibilizing effect without significantly affecting the other properties of PHB.

The soil biodegradability of PHB/mPHA/NC nanocomposites was evaluated by burying in garden soil at a temperature of 28 ± 1 ° C at a depth of 10 cm. The samples were monitored monthly for 4 months, observing more significant surface changes in the case of nanocomposites following analysis by light microscopy. On the other hand, the stability of PHB/PU/NC biocomposites in aqueous medium with different pH, with or without oxidizing agent, was better than the PHB reference.

All the objectives of the PC3 ESTERPACK project have been achieved and fulfilled in a proportion of over 100%. The main results are: 2 newly created jobs (ICECHIM and ICCF), 2 patent applications registered at OSIM, 4 ISI articles published, one article accepted and another sent to ISI journals and 12 presentations at international conferences, 3 new products (mPHA with controlled composition, PU with biodegradable sequences and nanocomposite), 4 new technologies (synthesis of mPHA and PU, obtaining bioalloy and nanocomposite).

PC4- FOTMAH

At this stage of the project, the following activities were carried out:  1) Demonstration of the sol-gel process and of the microwave-assisted hydrothermal process, respectively, for obtaining the oxide-type photocatalytic materials, doped with dye from the metallic complexes/polycycloketones class; 2) Evaluation and validation of the efficiency of oxide-type photocatalysts in the visible field, by spectrometry measurements (UV-VIS); 3) Complex characterization of optimized photocatalytic hybrid materials, doped with dye from the metallic complexes/polycycloketones class; 4) Finalizing the optimized recipes for paints with self-cleaning properties; 5) Elucidation of the antibacterial effect of photocatalytic hybrid materials, doped with dye from the metallic complexes/polycycloketones class.

It was demonstrated that the oxide-type photocatalytic materials, doped with dye, can be obtained by the sol-gel process and by the microwave-assisted hydrothermal process. TiO₂-dye photocatalytic films were made on different types of substrates (glass, plastic, quartz). The performance evaluation of SiO₂-TiO₂/TiO₂-dye photocatalytic films was performed in the photodegradation processes of the methylene blue dye. It was observed that the photocatalytic activity and kinetic degradation of methylene blue is influenced by the type of substrate, with a maximum efficiency of ~ 95% for SiO₂-TiO₂/TiO₂-dye films deposited on the glass substrate. The surface properties (contact angle, AFM, R%) were investigated for polysiloxane-silica composite films and polysiloxan-silica/TiO₂ composite films doped or undoped with iron phthalocyanine, deposited on glass and plastic. For all samples, it was observed that the transparency of the films can be modified depending on the silane formulations and the addition of TiO₂/TiO₂-dye dispersion.

Spectrometry measurements (UV-VIS) were performed for the crystalline structures of TiO₂ undoped and TiO₂ doped with Ag or Fe ions obtained by the hydrothermal method. It has been observed that the absorbance gradually shifts to a wavelength of 390 nm as function of the doping degree.

Testing the use of other binders in obtaining paints with self-cleaning properties based on TiO₂ sensitized with phthalocyanine-azomethine dyes showed that can occured the possibility to expand the product range by using silicate resins as a binder, when the photocatalytic effect is manifested with appropriate efficiency. The use of epoxy and polyurethane resins, respectively, led to unsatisfactory results.

Tests were performed to elucidate the antibacterial effect for 2 samples synthesized with silane precursors and using TiO₂ sensitized with dye (iron phthalocyanine) or ZnO (as powder), against two bacterial strains (Escherichia coli ATCC 8739 and Staphylococcus aureus ATCC 6538). The obtained results showed that the samples present antimicrobial activity classified as "weak" on the tested strains under the conditions of the adapted diffusimetric method.

All the proposed activities were successfully achieved, and the results were materialized in: 1 scientific stage report; 1 stage financial report; 1 audit report; 1 demonstration report regarding the obtaining of oxide-type photocatalytic materials, doped with dye, by the sol-gel process (ICECHIM) and by the microwave-assisted hydrothermal process (UB), evaluation and validation of the efficiency of oxide-type photocatalysts in the visible field (INCEMC), structural analyzes of photocatalytic materials, doped with dye (ICMPP), laboratory methodology for obtaining paints with self-cleaning properties (UPB), antibacterial effect of photocatalytic hybrid materials, doped with dye (ICCF); 3 published articles (ICECHIM), 1 article accepted for publication (ICECHIM), 4 scientific communications (ICECHIM, ICMPP).

PC5 3D LONG-LIFE

The designing of new polymeric materials involves the simultaneous consideration of both the requirements of applications of interest and those for processing technique into finished product. The purpose of the project 40-2018 / 5 (3D-LONG-LIFE) is to create the new sustainable, renewable, polymerics materials, compatible with 3D printing. The method of acheving these materials is based on the physico-chemical modification of polylactic acid, a renewable polymer, with very good melt processability, but without durability properties. To achieve this goal, it has been selected those innovative methods that allow the control of durability properties based equally on the balance of rigidity -capacity to absorb breaking energy and the thermal properties. It was studied mainly the co- crystalization through the stereocomplexation. The paper presents the results obtained in 2021 related to p testing the behavior at 3D printing; Identifying the influence of 3D printing conditions, Correcting the flowability of the new material in the melted state with the help of printing conditions; Correction of the final formulation; Selection of optimal 3D printing conditions; Complex material characterizations (CO); Controlling the adhesion between the material layers, deposited by 3D printing, with the help of the rheological properties of the melts (CO); Final, structural and functional characterization of the new materials  achieved using the corrected formulation, revised to the requirements of 3D printing (P1, P2, P3); Final characterization of surfaces, fractures, crystallinity, etc. of the new materials, obtained using the amended, upgraded formulation (P3); Final mechanical, thermal and rheological characterization of new materials, achived using the formulation tailored to the requirements of 3D printing (CO, P1, P2); Final material properties (CO, P1, P2, P3); Laboratory technology (CO); Dissemination of results (CO, P1, P2, P3) and Protection of intellectual property rights (CO).

The obtained results were disseminated by publishing 4 articles and sending the 5th article for publication. A patent application has been deposited to the OSIM and a doctoral thesis with a subject related to this contract is being elaborated. The two young ACS employed on the project will be kept in ICECHIM, by covering the salary from the team's contracts.

Based on the results obtained, it is estimated that all the result indicators scheduled for stage 4 of the project have been fully realized.

Dissemination FIRST STAGE

Published articles

1. Denis Mihaela Panaitescu, Eusebiu Rosini Ionita, Cristian Andi Nicolae, Raluca Augusta Gabor, Maria Daniela

Ionita, Roxana Trusca, Brindusa-Elena Lixandru, Irina Codita, Gheorghe Dinescu Poly(3-hydroxybutyrate) modified by nanocellulose and plasma treatment for packaging applications, Polymers (2018) 10, 1249,

2. Caprarescu S. Miron A.R, Purcar V., Radu A.L., Sarbu A., Nicolae C.A., Pascu M.N., Ion Ebascu, Treatment of crystal violet from synthetic solution membranes doped with natural fruit extract, Clean-Soil, Air Water Vol 46, Issue7,  July 2018

Sent articles

1. Violeta Purcar, Valentin Raditoiu, Cristian-Andi Nicolae, Adriana Nicoleta Frone, Alina Raditoiu, Florentina Monica Raduly, Raluca Somoghi, Raluca Augusta Gabor, Simona Caprarescu , Synthesis and morpho-structural propertiesc of TiO₂- based materials, trimis la Journal of Optoelectronics and Advanced Materials 

Comunications

Dissemination SECOND STAGE

PC1

ICECHIM

• Scientific communications at national / international conferences:

            1. MIRON Andreea, DUMITRU Marinela-Victoria, RADU Anita-Laura, SANDU Teodor, ZAHARIA Anamaria, IORDACHE Tanta-Verona, SARBU Andrei, “Advanced hybrid materials for different uses”, NeXT-Chem Innovative Trans-Sectoral Technologies, 6 mai 2019, Bucuresti, oral presentation

            2. Radu Anita-Laura, Sarbu Andrei, Andreea Miron, Zaharia Anamaria, Gavrila Ana-Mihaela, Iordache Tanta-Verona, Sandu Teodor, Coman Alina-Elena, Apostol Steluta, Damian Celina, “Inorganic-organic composites with enhanced properties for advanced ceramics”, 9th International Conference of the Chemical Societies of the South-East European Countries, Targoviste, 8-10 mai 2019, poster

            3. Andreea Miron, Celina-Maria Damian, Anita-Laura Radu, Andrei Sarbu, “Inorganic-organic polymeric hibrids as precursors for advanced ceramics”, Student communications session, master SIGONAPOL, 10 mai 2019, Bucuresti

            4. Anamaria Zaharia, Anita-Laura Radu, Ana-Mihaela Gavrila, Teodor Sandu, Andreea Miron, Marilena Dumitru, Andrei Sarbu, Carmen Sirbu, Tanta-Verona Iordache, “Hybrid microparticles for the retention/release of pesticides with application in agriculture”, “World Congress on Functional Materials and Nanotechnology” (WCFMN 2019), 12-16 mai 2019, Valencia, Spania

            5. A. Miron_, A.-L. Radu, A. Zaharia, C.-T. Cojocaru, A.-M. Gavrila, T. Sandu, E.-B. Stoica, A. Sarbu, C. Sirbu, T.-V. Iordache, “Zeolite microparticles modified by host-guest molecular imprinting for pesticides retention”, 8th Graduate Student Symposium on Molecular Imprinting, 28-30 august 2019, Berlin, Germania

            6. Ana-Mihaela Gavrila, Ana Lorena Ciurlica, Andrei Sârbu, Anamaria Zaharia, Anita-Laura Radu, Steluta Apostol, Elena-Bianca Stoica, Constantin Nicolae Toader, Tan?a-Verona Iordache, “Preparation and characterization of molecularly imprinted particles for sulphur mustard determination”, 8th Graduate Student Symposium on Molecular Imprinting, 28-30 august 2019, Berlin, Germania

            7. Anita-Laura Radu, Andreea Miron, Anamaria Zaharia, Ana-Mihaela Gavrila, Tanta-Verona Iordache, Crina-Thea Cojocaru, Razvan-Edward Botez, Bianca-Elena Stoica, Celina-Maria Damian, Andrei Sarbu, „Novel nanocomposites based on mesoporous titania/acrylonitrile polymer: synthesis and characterization”, 27thScientific Communication Session“Advances in the science of organic and macromolecular compounds”, 2-4 octombrie 2019, Iasi, Romania

            8. Bianca-Elena Stoica, Ana-Lorena Ciurlica, Tanta-Verona Iordache, Andrei Sarbu, Anamaria Zaharia, Anita-Laura Radu, SanduTeodor, Steluta Apostol, Monica Duldner, Ana-Mihaela Gavrila, „Preparation and characterization of non-imprinted films doped with conducting polymers”, Scientific Communication Session “Advances in the science of organic and macromolecular compounds”, 2-4.10.2019, Iasi, Romania

            9. Teodor Sandu, Andrei Sârbu, Raul-Augustin Mitran, Nicolae St?nic?, Delia P?troi, Virgil Marinescu, Maria Luiza Jecu, Melania Liliana Arsene, Anita Laura Radu, Marinela Victoria Dumitru, Tan?a Verona Iordache, Ana Mihaela Gavrila, Stelu?a Apostol, ”Innovative composite beads based on polymer blends and mnps and their use in biotechnology”,27th Scientific Communication Session “Advances in the science of organic and macromolecular compounds”, 2-4.10.2019, Iasi, Romania

• Technology for the synthesis of polymeric nanocomposites by host-guest polymerization
• Article sent for publication: Andrei Sarbu, TeodorSandu, Raul-Augustin Mitran, Nicolae St?nic?, Ana Mihaela Gavril?, Delia P?troi, Virgil Marinescu, Cristian Petcu, Marinela Victoria Dumitru, Tanta Verona Iordache, „Two-component Polymer Beads with Magnetic Features as Drug Adsorbents, Journal of Applied Polymer Science”
• National patent application:Radu Anita-Laura, Sârbu Andrei, Dumitru Aurelia-Anca, Ifteme Sorina, Carmen Laz?u, Orha Corina Ileana, Tan?a Verona Iordache, Teodor Sandu, Miron Andreea, Stelu?a Apostol, “Process for obtaining titanium nitride via inorganic-organic polymeric nanocomposites”, OSIM A00166/15.03.2019

INCEMC- Timisoara

Scientific communications at national / international conferences:

            1. C. Lazau, C. Orha, C. Bandas, M. Nicolaescu, M. Vajda, M. Popescu, “Synthesis and characterization of mesoporous TiO₂^”, TIM19 Physics Conference May 2019, Timisoara, Romania

• Synthesis technology of inorganic temperate, mesoporous TiO2 by the optimal process
• National patent application-

1,.Lazau Carmen, Orha Corina, Bandas Cornelia "New hybrid materials based on natural zeolites functionalized with titanium dioxide "black" obtained by the solid-solid method", nr. A/00332/2019

UPB

Scientific communications at national / international conferences:

            1. C.M. Damian, M.I. Necolau, I.E. Neblea, E. Vasile, H. Iovu, Synergistic effect of graphene oxide functionalized SiO₂ nanostructures in the epoxy nanocomposites,  a XI-a edi?ie a Conferin?ei Interna?ionale de ?tiin?a ?i Ingineria Materialelor – BRAMAT 2019 13-16 martie 2019, Poiana Brasov, Romania, prezentare orala

            2. Celina Maria Damian, Madalina IoanaNecolau, Iulia Elena Neblea, EugeniuVasile, HoriaIovu, Synthesis of Hybrid Nanostructures Based on Graphene Oxide and the Evaluation of Their Influence in Epoxy Nanocomposites, 21st Romanian International Conference on Chemistry and Chemical Engineering (RICCCE 2019), 6-9 septembrie 2019, Mamaia, Romania, prezentareorala

            3. M?d?lina Ioana Necolau, Ana Maria Paraschiv, Celina Maria Damian, Br?ndu?a B?l?nuc?, Horia Iovu, Advanced Studies on Biobased Epoxy Network Curing Reactions and Thermal Properties, 21st Romanian International Conference on Chemistry and Chemical Engineering (RICCCE 2019), 6-9 septembrie 2019, Mamaia, Romania, poster

Article sent for publication

• : C. M. Damian, Madalina IoanaNecolau, Iulia Elena Neblea, EugeniuVasile, HoriaIovu, Synergistic Effect of Graphene Oxide Functionalized with SiO2 Nanostructures in the Epoxy Nanocomposites, Applied Surface Science, nr. APSUSC-D-19-07553R2

UB

Scientific communications at national / international conferences:

            1. Anca Dumitru, Vlad Basceanu, Robert Maaz, ClaudiuLocovei, Sorin Avramescu and SorinaIftimie, Relation between the morphology and nitrogen environment of nitrogen-containing carbon nanostructures and their performance as anode modifier in microbial fuel cell, International Balkan Workshop on Applied Physics, 2019July  16-19, Constan?a, România – poster

            . Anca Dumitru, Sorina Iftimie, Anita Radu, Andreea Miron, Andrei Sarbu, Cristian Panaiotu, Claudiu Locovei, Carmen Lazau, „Synthesis of titanium nitride via hybrid polymeric composites”, YUCOMAT 2019 & WRTCS 2019, 2–6 septembrie 2019, Herceg Novi, Montenegro– poster

         ·    Technology for the production ofTiN by the carbothermal method via nanonocomposites

• Published       article:

1. Sorina Iftimie, Anca Dumitru,Enhancing the performance of microbial fuel cells (MFCs) with nitrophenyl modi?ed carbon nanotubes-based anodes,Applied Surface Science 492 (2019) 661–668

ICMM Petru Poni- IASI

Scientific communications at national / international conferences:

1. Ilie Daniel ?împu, Andrei Sârbu, Anita-Laura Radu, “Researches in obtaining and characterizing Titanium-Carbon nanocomposites”, a 27-a Session of scientific communications“Advances in the science of organic and macromolecularcompounds”, 2-4.10.2019, Iasi, Romania

Carbonization technology of the polymeric component in nanocomposites

PC2

            - Published articles:

            1. I.C. Gîfu, M.E. Maxim, L.O. Cinteza, M. Popa, L Aricov, A.R. Leonties, M. Anastasescu, D.F. Anghel, R. Ianchis, C.M. Ninciuleanu, S.G. Burlacu, C.L. Nistor, C. Petcu, “Antimicrobial Activities of Hydrophobically Modified Poly(Acrylate) Films and Their Complexes with Different Chain Length Cationic Surfactants”, Coatings, 9, 244, 2019.

            - Participations at national/international conferences:

            1. C. Petcu, I.C. Gifu, C. Scomoroscenco, M. Doni, B. Trica, C.M. Ninciuleanu, C.L. Nistor, R. Ianchis, L.O. Cinteza, A. Raducan, M. Marinescu, “Green Synthesis and Characterization of Cu Nanoparticles for Functional Coatings with Antibacterial Properties”, 4th International Congress on Biomaterials & Biosensors (BIOMATSEN 2019), Fethiye - Mugla, Turkey, 12-19 May 2019.

            2. M. Marinescu, C. Scomoroscenco, C.L. Nistor, C.M. Ninciuleanu, B. Trica, C. Petcu, L. M. Ditu, L.O. Cinteza, “Green Synthesis of Silver Nanoparticles with Superior Antimicrobial Activities Using Onion Extract”, 9th International Conference of the Chemical Societies of the South-East European Countries, Targoviste, Romania, 8-11 May 2019.

            3. L.O. Cintez?, A. R?ducan, D. Bala, P. Oancea, M. Micu?, T. Staicu, C. Petcu, C. Scomoroscenco, C.L. Nistor, “Multifunctional Coatings Based on Metallic and Metal Oxide Nanoparticles”, EuroNanoForum, Bucharest, Romania, 12-14 June 2019.

            4. C. Mih?escu, C.L. Nistor, C. Petcu, R. Ianchi?, C.M. Ninciuleanu, E. Alexandrescu, C. Scomoroscenco, “Novel Formulations of PEG-Silica Phase Changing Materials (PCMs) with Applications in Passive Storage of Thermal Energy”, Priorities of Chemistry for a Sustainable Development - PRIOCHEM 15’th Edition, Bucharest, Romania, 30 October - 1 November 2019.

            5. C.M. Ninciuleanu, R. Ianchi?, E. Alexandrescu, B. Tric?, S. Preda, C. Scomoroscenco, C. Mih?escu, C.L. Nistor, C. Petcu, M. Teodorescu, “Composite Hydrogels Based on Poly (Methacrilyc Acid) Reinforced with Laponite Inorganic Filler”, Priorities of Chemistry for a Sustainable Development - PRIOCHEM 15’th Edition, Bucharest, Romania, 30 October - 1 November 2019.

            6. L.O Cintez?, M. Teodorescu, I.C. Gîfu, R. Ianchi?, C.L. Nistor, C. Petcu, C.M. Ninciuleanu, E. Alexandrescu, C.I. Mih?escu, “Preparation and Characterization of Vegetable Oil-Based Microemulsions”, Priorities of Chemistry for a Sustainable Development - PRIOCHEM 15’th Edition, Bucharest, Romania, 30 October - 1 November 2019.

            - Laboratory technologies:

Laboratory technology for obtaining total and selective plant extracts from native flora with antimicrobial potential (elaborated by the ICCF partner).

- 5 training (research)/development internships and working visits – conducted between Bucharest partners: ICECHIM, UPB, UB and ICCF.

- 1 workshop: “Trends in Hybrid Nanocoatings”, held at the symposium Priorities of Chemistry for a Sustainable Development - PRIOCHEM 15’th Edition, Bucharest, Romania, 30 October - 1 November 2019, with the participation of representatives from all partners. Organizers: C. Petcu, I.C. Gîfu, C. Scomoroscenco, C.I. Mih?escu, C.M. Ninciuleanu, C.L. Nistor, R. Ianchi?, E. Alexandrescu, A. R?ducan, M. Marinescu, L.O. Cinteza, A. Ghebaur.

PC3

Conferences

1. Sergiu-Alexandru Stoian, Denis Mihaela Panaitescu, Cristian Andi Nicolae, Raluca Augusta Gabor, Paul Octavian Stanescu, Cross-linked nanocellulose foams using mono- and disaccharides, 4th International Congress on Biomaterials & Biosensors (BIOMATSEN), Oludeniz, Turkey, May 12-18, 2019 (poster)

2. Sergiu-Alexandru Stoian, Denis Mihaela Panaitescu, Augusta Raluca Gabor, Cristian Andi Nicolae, Valentin Raditoiu, Thermal properties of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) nanocomposites with controlled degradability, 5th Central and Eastern European Conference on Thermal Analysis and Calorimetry (CEEC-TAC5), Rome, Italy, August 27-30, 2019 (poster)

3. Denis Mihaela Panaitescu, Alexandru Sergiu Stoian, Cristian Andi Nicolae, Adriana Nicoleta Frone, Augusta Raluca Gabor, Dynamic mechanical properties of polyhdroxybutirate reinforced with cellulose microfibrils, 5th Central and Eastern European Conference on Thermal Analysis and Calorimetry (CEEC-TAC5), Rome, Italy, August 27-30, 2019 (poster)

4. Sergiu Alexandru Stoian, Florin Ciuprina, Laura Andrei, Denis Mihaela Panaitescu, George Mihail Teodorescu, Cristian Andi Nicolae, Valentin Raditoiu, Raluca Augusta Gabor, Structural, mechanical and dielectric properties of polyhydroxyalkanoatebiocomposites, 21st Romanian International Conference on Chemistry and Chemical Engineering, Constanta- Mamaia, ROMANIA - September 4 – 7, 2019 (poster)

5. Denis Mihaela Panaitescu, Paul Octavian Stanescu, Adriana Nicoleta Frone, Radu Ionut, IoanaChiulan, Augusta Raluca Gabor, Cristian Andi Nicolae, Surface modified bacterial cellulose for packaging application, 21st Romanian International Conference on Chemistry and Chemical Engineering, Constanta- Mamaia, ROMANIA - September 4 – 7, 2019 (poster)

6. L. Stroea, V. Melinte, T. Buruiana, Synthesis, morphology and properties of novel aliphatic biodegradable polyurethanes, 21st Romanian International Conference on Chemistry and Chemical Engineering, RICCCE 21, September 4-7 2019, Constanta – Mamaia, Romania (poster)

PC4

ICECHIM

Articles

1.         VioletaPurcar, ValentinR?di?oiu, Cristian.-AndiNicolae, Adriana NicoletaFrone, AlinaR?di?oiu, Florentina Monica Raduly, Raluca?omoghi, Raluca Augusta Gabor,  SimonaC?pr?rescu, „Synthesis and morpho-structural properties of TiO₂-based materials”, Journal of Optoelectronics and Advanced Materials, 21 (3-4), (2019)281-286.(reported in December 2018, but published in 2019).

2.         Violeta Purcar, Valentin R?di?oiu, AncaDumitru, Cristian-Andi Nicolae, Adriana NicoletaFrone, Mihai Anastasescu, Alina R?di?oiu, Monica Florentina Raduly, Raluca Augusta Gabor, SimonaC?pr?rescu, „Antireflective coating based on TiO2 nanoparticles modified with coupling agents via acid-catalyzed sol-gel method”, Applied Surface Science, 487, (2019) 819-824.

3.         SimonaCaprarescu, Cristina Modrogan, Violeta Purcar, Annette MadeleneDancila, RaduClaudiuFierascu, „Study of corrosion efficiency of mild steel using commercial liquid additives for fish in natural water”, Revista de Chimie, 70(4), (2019) 1140-1143.

4.         SimonaCaprarescu, Daniela Ion-Ebrasu, AmaliaSoare, Violeta Purcar, Anita-Laura Radu, Andrei Sarbu, Mihaela (Neagu) Pascu, Cristina Modrogan, Annette MadeleneDancila, Carmen Deleanu, „Removal of Nickel Ions from Synthetic Wastewater Using Copolymers/Natural Extract Blend Membranes”, Romanian Journal of Physics, 64, (2019), p. 821.

Proceeding paper

Violeta Purcar, Raluca Manea, Valentin Raditoiu, Alina Raditoiu, Florentina Monica Raduly, Adriana Frone, Mihai Anastasescu, Georgiana Cornelia Ispas, Luminita Eugenia Wagner, „Preparation of transparent sol-gel modified silica hydrophobic coatings on plastic substrates”, Proceedings, 29, (2019), 79; doi:10.3390/proceedings2019029079.

National/international Conferences

1.         Raluca Manea, Violeta Purcar, Valentin Raditoiu, Alina Raditoiu, Florentina Monica Raduly, Adriana Frone, Mihai Anastasescu, Georgiana Cornelia Ispas, Luminita Eugenia Wagner, „Preparation and characterization of bilayer coatings based on silica materials and iron (III) phthalocyanine - sensitized TiO2photocatalyst”, Workshop Exploration NeXT-Chem, Bucharest, Romania, 6-7 may 2019(poster presentation);

2.         Violeta Purcar, Raluca Manea, Valentin Raditoiu, Alina Raditoiu, Florentina Monica Raduly, Georgiana Cornelia Ispas, Adriana Frone, Lumini?a Eugenia Wagner, SimonaC?pr?rescu, „Sol-gel bilayer coatings based on silica hybrids and TiO2 sensitized with iron (III) phthalocyanine”, 9th International Conference of the Chemical Societies of the South-East European Countries, Targoviste, Romania, 8-11 may 2019 (poster presentation);

3.         Adina Alexandra Scarlat, SimonaC?pr?rescu, Violeta Purcar, Cristina Modrogan, AnneteMadeleneD?ncila, Oana Mari Daniela Orbule?, „Treatment of paint wastewater using natural plant,  crusched granite and anion exchange resin”, 6th International Conference Geography, Environment and GIS for students and young researchers, Targoviste, Romania, 23-25 may 2019 (poster presentation);

4.         Valentin R?di?oiu, Violeta Purcar, Alina R?di?oiu, Raluca Manea, Florentina Monica Raduly, Georgiana Cornelia Ispas, Adriana Frone, Mihai Anastasescu, Lumini?a Eugenia Wagner, SimonaC?pr?rescu, „Facile preparation in two steps of sol-gel coatings based on silica materials and TiO2nanoparticles”, 19th International Balkan Workshop on Applied Physics and Materials Science, Constanta, Romania, 16-19 july 2019 (poster presentation);

5.         SimonaC?pr?rescu, Violeta Purcar,AnneteMadeleneD?ncila, Cristina Modrogan, Oanamari Daniela Orbule?, „Corrosion protection of mild carbon steel using seaweed”, 19th International Balkan Workshop on Applied Physics and Materials Science, Constanta, Romania, 16-19 july 2019 (poster presentation);

6.         Violeta Purcar, Raluca Manea, Valentin Raditoiu, Alina Raditoiu, Florentina Monica Raduly, Adriana Frone, Mihai Anastasescu, Georgiana Cornelia Ispas, Luminita Eugenia Wagner, „Preparation of transparent sol-gel modified silica hydrophobic coatings on plastic substrates”, The International Symposium “Priorities of chemistry for a sustainable development-PRIOCHEM” XVth Edition, Bucharest, Romania, 30 october-1 november 2019 (oral presentation);

7.         Violeta Purcar, Raluca Manea,ValentinRaditoiu, Alina Raditoiu, Florentina Monica Raduly, Georgiana Cornelia Ispas, Luminita Eugenia Wagner, Adriana Frone, “Synthesis and characterization of photocatalytic TiO2 sol–gel thin films”, 21st Romanian International Conference on Chemistry and Chemical Engineering, Constanta- Mamaia, Romania, 4-7 september 2019 (poster presentation).

INCDEMC-INEMC–Timisoara

Conference

MirceaNicolaescu, Carmen Lazau, CorinaOrha, Cornelia Bandas, Daniel Ursu, Melinda Vajda, Mina  IonelaPopescu, “Synthesis and structural characterization of black TiO2”, 12th Edition of symposium with international participation - New trends and strategies in the chemistry of advanced materials with relevance in biological systems, technique and environmental protection, Timisoara, Romania, 6-7 june 2019 (poster presentation).

Politehnica University of Bucharest

Conference

Ioana Asofiei, Aurelian Cristian Boscornea, Diana-Ioana Buliga, Stefan Tomas, Cristina Pop, “Self-cleaning waterborne paints based on TiO2 sensitized with mixed chromophore dyes”, 21st Romanian International Conference on Chemistry and Chemical Engineering, Constanta-Mamaia, Romania, 04 - 07 september 2019 (oral presentation).

"PetruPoni"Institute of MacromolecularChemistry, Iasi

Accepted article

1.         A.I. Barzic. M. Soroceanu, R. Rotaru, V. Harabagiu. R.C. Ciobanu, “Optical dispersion characteristics of polyvinyl alcohol reinforced with a nanoceramic filler”,MaterialePlastice, accepted

Conferences

1.         V. Harabagiu, R. Rotaru, A.-C.Humelnicu, “Polysaccharide materials for health and high-tech application”; The 12th Edition of the Symposium with International Participation: New Trends and Strategies in the Chemistry of Adavanced Materials of Relevance in Biological Systems, Techniques and Environmental Protection; Timisoara, 6-7 june2019 (plenary conference)

2.         M.E. Fortuna, L. Pricop, M. Ignat, D. Popovici, V. Purcar, V. Harabagiu, “Synthesis, characterization and photocatalytic activity of Cu/guanidine/disiloxane complexes”; 21th International Conference on Nanoscience, Nanotechnology and Advanced Materials, Praga, Czech Rep., 09-10 july2019 (oral presentation)

3.         D. Blaj, V. Harabagiu, C. Savin, C. Peptu, “Polymer networks obtained by photoinitiatedthiol-ene coupling”; Academic Days of Iasi, 27th Edition, Progresses In The Science Of Organic And Macromolecular Compounds, Iasi, 2-4 october2019 (oral presentation)

4.         B. Condurache, R. Rotaru, C. Cojocaru, V. Harabagiu, “Wool based sorbents for removing oils from wastewater”; Academic Days of Iasi, 27th Edition, Progresses In The Science Of Organic And Macromolecular Compounds, Iasi, 2-4 october2019 (poster presentation)

5.         A.I. Barzic, M. Soroceanu, R. Rotaru, V. Harabagiu, “Optical dispersion characteristic of polyvinyl alcohol reinforced with a nanoceramic filler”; International Conference on Polymer Processing and Engineering, Galati, 7-9 october2019  (oral presentation)

University of Bucharest

Conference

1.         Sorin Avramescu, Anca Dumitru, Violeta Purcar, Alina Olaru, Angel Nica, „Photocatalytic removal of ibuprofen from water using sol-gel prepared TiO2 thin films”, 11th International Conference on Materials Science&Engineering – BRAMAT, Brasov, Romania,13-16 march 2019 (poster presentation)

PC5

Articles

1. Doina Dimonie, Celina Damian, Roxana Trusca, Maria Rapa, Some Aspects Conditioning the Achieving of Filaments for 3D Printing from Physical Modified Corn Starch, MATERIALE PLASTICE 56, No. 2, 2019, 351 - 359 http://www.revmaterialeplastice.ro

International Scientific Conferences

1. Alina Ioni??, Andra Sîrmon, Beatrice Gîrbaciu, Sorina Iftimie, Doina Dimonie, ”Study of the melt rheological properties as possibility to control the 3D printing behavior of some new sustainable polymeric materials”, paper presented at the 11^th International Conference on Materials Science & Engineering (BRAMAT 2019), 13 – 16 march 2019, Transilvania University, Bra?ov

2. Andra Sîrmon, Alina Ioni??, Beatrice Gîrbaciu, Sorina Iftimie, Claudiu Locovei, Anca Dumitru, ?tefan Antohe, Aurelian Stamata, Doina Dimonie, ”Engineering of achieving on a new laboratory line of polymer filaments that comply with 3D/ 4D print requirements”, 19^th International Balkan Workshop on Applied Physics and Materials Science (IBWAP 2019), 16 – 19 july 2019, Constan?a

3. Alina Ioni??, Andra Sîrmon, Beatrice Gîrbaciu, C?t?lin Zaharia, Ionu?-Cristian Radu, Doina Dimonie, ”The melt flow properties of new renewable compounds designed for 3D printing”, 21^st International Conference on Chemistry and Chemical Engineering (RICCCE 21), 4 – 7 september 2019, Constan?a – Mamaia

4.Beatrice Gîrbaciu, Mariana Cristea, Daniela Ioni??, Silvia Mathe, Doina Dimonie, ”Physical modification of PLA for increasing its durability (polarizing light microscopy study), International Symposium Priorities of Chemistry for a Sustainable Development – PRIOCHEM XV 2019, 30 october – 1 november 2019, Bucharest

5.Silvia Mathe, Beatrice Gîrbaciu, Doina Dimonie, ”DSC study of cold crystallization characterizing the stereocomplexed PLA compounds”, International Symposium Priorities of Chemistry for a Sustainable Development – PRIOCHEM XV 2019, 30 october – 1 november 2019, Bucharest

6.D. Ionita, M. Cristea, C. Gaina; ”Evaluation of the viscoelastic behavior of PU using the time – temperature equivalence”, the XXVII^th International Conference of the ”Petru Poni” Macromolecular Chemistry Institute, 2 – 4 october 2019, Iasi 

7.D. Ionita, M. Silion, D. Dimonie, M. Cristea; ”DART-MS: Mass Spectroscopy with direct analysis in real time. Case of poly(lactic acid)”, the XXVII^th International Conference of the ”Petru Poni” Macromolecular Chemistry Institute, 2 – 4 october 2019, Iasi 

WorkShop

1. Andra Sîrmon, Daniela Ioni??, Beatrice Gîrbaciu, Viorel Grigorescu, Doina Dimonie, ”Sustainable renewable polymeric materials compatible with 3D printing”, paper presented at the Exploratory Workshop NeXT-Chem - Inovative Trans-sectorial technologies, ICECHIM, 6 – 7 may, Bucharest

Disemination Stage 3

 PC1 BIOTIN

Published Articles

1. C. M. Damian, Madalina Ioana Necolau, Iulia Elena Neblea, Eugeniu Vasile, Horia Iovu,Synergistic Effect of Graphene Oxide Functionalized with SiO2 Nanostructures in the Epoxy Nanocomposites Applied Surface Science , 507, 2020, 145046,

2. M?d?lina-Ioana Necolau and Andreea-M?d?lina Pandele, Recent Advances in Graphene Oxide-Based Anticorrosive Coatings: An Overview, Coatings 2020, 10, 1149, 15 pp.

Sent articles:

Scientific Reports: Synthesis of titanium nitride via hybrid nanocomposites based on mesoporous TiO2/acrylonitrile Claudiu Locovei1,2, Anita–Laura Chiriac3, Andreea Miron3, Sorina Iftimie1, Vlad–Andrei Antohe1,4, Andrei Sarbu 3,*, and Anca Dumitru1,*

National and international Conferences

ICECHIM:

1. NeXTChem 2^nd edition, 2020, Innovative hybrids for advanced ceramics Miron Andreea1, Ciurlica Ana-Llorena1, Dumitru Marinela-Victoria1, Chiriac Anita-Laura1,  STOICA Elena-Bianca1, IORDACHE Tanta-Verona1, SARBU Andrei, oral

UB:  Materials, Methods & Technologies 29 August – 1 September 2020, Burgas, Bulgaria, poster,  Anca Dumitru , Andreea Miron, Anita Radu, Andrei Sarbu, Sorina Iftimie , Cristian Panaiotu, Claudiu Locovei , Carmen Lazau, Synthesis of titanium nitride via nanocomposites based on mesoporous titania/acrylonitrile polymers,

ICMPP: 1. Materials, Methods & Technologies 2020, 22nd International Conference, 29 August – 1 September 2020, Burgas, Bulgaria, oralprezentation on site, Daniel Timpu, Andrei Sarbu, Anita-Laura Radu, Miron Andreea, Study of an innovative manufacturing process for titanium nitride ceramic via hybrid polymer composites

2. 5th International Conference on Chemical Engineering (ICCE 2020) – October 28-30, Iasi  oral prezentation : Ilie Daniel Timpu, Andrei Sarbu, Anita-Laura Radu, Miron Andreea Thermal process for obtaining titanium nitride nano-powder via vinyl polymer composites

PC2 MAHIN

Published Articles

1. C. Petcu, E. Alexandrescu, A. B?lan, M.A. T?nase, L.O. Cintez?, „Synthesis and Characterisation of Organo-Modified Silica Nanostructured Films for the Water-Repellent Treatment of Historic Stone Buildings”, Coatings, 10(10), 1010, 2020.

2. C. Nichita, F. M.Al-Behadili, E. Vasile, I. Stamatin, „Silver nanoparticles synthesis. Bioreduction with galic acid and extracts from Cyperus rotundus L.”, Digest Journal of Nanomaterials and Biosturctures, 15(2), 419-433, 2020.

- National and international Conferences

1. Maria Antonia T?nase, Cristina T?ble?, Cristina Lavinia Nistor, Cristina Scomoro?cenco, Elvira Alexandrescu, Cristian Petcu, Ludmila Otilia Cintez?, „Toxicity versus bioactivity - strategies to increase the biocompatibility of metallic and metal oxide nanoparticles”, National Online Conference of Biophysics NCB, Bra?ov, June 14, 2020.

2. L. Stroea, V. Melinte, A.L. Scutaru, C. Petcu, T. Buruian?, “Structural and Morphological Characterization of Some Plant Extract-Mediated Metallic and Metal Oxide Nanoparticles”, „International Chemical Engineering and Material Symposium” (SICHEM 2020), Bucharest, September 17-18, 2020.

3. Ludmila Otilia Cintez?, Adina R?ducan, Petru?a Oancea, Maria Antonia T?nase, Maria Marinescu, Cristina Scomoro?cenco, Elvira Alexandrescu, Claudia Mihaela Ninciuleanu, Cristina Lavinia Nistor, Cristian Petcu, „Novel ZnO nanoparticle – based polymeric coatings for UV protection of natural dyes in historic textiles”, International Conference “39th Dyes in History and Archaeology” 39DHA 2020 online, Sibiu, 15-16 oct 2020.

4. C?t?lin Mih?escu, Cristina Lavinia Nistor, Cristian Petcu, Raluca Ianchi?, Claudia Mihaela Ninciuleanu, Elvira Alexandrescu, Cristina Scomoro?cenco, Ludmila Otilia Cintez?, „Synthesis and Morphological Investigation of Flower-Like ZnO Nanostructures”, The XVIth International Symposium “Priorities of Chemistry for a Sustainable Development” PRIOCHEM XVI, Bucure?ti, October 28-30, 2020.

5. Ludmila Otilia Cintez?, Daniela Bala, Adina R?ducan, Petru?a Oancea, Maria Antonia T?nase, Cristina Scomoro?cenco, Elvira Alexandrescu, C?t?lin Mih?escu, Cristina Lavinia Nistor, Cristian Petcu, „Layer-By-Layer Preparation of Ormosil Nanomaterial for Amphiphobic Surfaces”, The XVIth International Symposium “Priorities of Chemistry for a Sustainable Development” PRIOCHEM XVI, Bucure?ti, October 28-30, 2020.

6. Maria Antonia T?nase, Adina R?ducan, Petru?a Oancea, Cristina Scomoro?cenco, Elvira Alexandrescu, Bogdan Tric?, Cristina Lavinia Nistor, Cristian Petcu, Alina Popescu, Ioana Rodica St?nculescu, Ludmila Otilia Cintez?, „Synthesis and Characterization of Superhydrophobic Films with Raspberry –Like Silica Nanoparticles as Functional Coatings”, The XVIth International Symposium “Priorities of Chemistry for a Sustainable Development” PRIOCHEM XVI, Bucure?ti, October 28-30, 2020.

7. Cristina Lavinia Nistor, C?t?lin Ionu? Mih?escu, Ludmila Otilia Cintez?, Claudia Ninciuleanu, Elvira Alexandrescu, Cristina Scomoro?cenco, Raluca Ianchi?, Cristian Petcu, „Nano-Structured Hybrid Films as Protection Coatings, Prepared by Sol-Gel Process”, 3rd International Conference on Emerging Technologies in Materials Engineering, EmergeMAT, Bucure?ti, October 29-30, 2020.

8. Claudia Ninciuleanu, Raluca Ianchi?, Cristina Lavinia Nistor, Cristina Scomoro?cenco, C?t?lin Mih?escu, Elvira Alexandrescu, Bogdan Tric?, Cristian Petcu, Silviu Preda, Mircea Teodorescu, „Composite Materials Based on Poly(Methacrylic) Acid and Three Different Fillers”, 3rd International Conference on Emerging Technologies in Materials Engineering, EmergeMAT, Bucure?ti, October 29-30, 2020.

9. Ludmila Otilia Cintez?, Adina R?ducan, Petru?a Oancea, Maria Antonia T?nase, C?t?lin Ionu? Mih?escu, Claudia Ninciuleanu, Elvira Alexandrescu, Cristina Scomoro?cenco, Cristian Petcu, “Amphiphobic Silica Based Nanomaterials with Tunable Roughness for Antibacterial Coatings”, 3rd International Conference on Emerging Technologies in Materials Engineering, EmergeMAT, Bucure?ti, October 29-30, 2020.

10. Maria Antonia T?nase, Adina R?ducan, Petru?a Oancea, Cristina Lavinia Nistor, Elvira Alexandrescu, Cristina Scomoro?cenco, Cristian Petcu, Maria Marinescu, Ludmila Otilia Cintez?, „Facile Layer-by-Layer Synthesis of Novel Functional ZnO Nanoparticle –Based Coatings With Antibacterial Properties”, 3rd International Conference on Emerging Technologies in Materials Engineering, EmergeMAT, Bucure?ti, October 29-30, 2020.

PC3 ESTERPACK

Published Articles

1 D.M. Panaitescu, S.Vizireanu, S.A. Stoian, C.-A. Nicolae, A.R. Gabor, C.M. Damian, R. Trusca, L.G. Carpen, G. Dinescu, Poly(3-hydroxybutyrate) modified by plasma and TEMPO-oxidized celluloses, Polymers 2020, 12, 1510.

2. D.M. Panaitescu, R. Trusca, A.R. Gabor, C.A. Nicolae, A. Casarica, Biocomposite foams based on polyhydroxyalkanoate and nanocellulose: Morphological and thermo-mechanical characterization, International Journal of Biological Macromolecules, 164, 2020, 1867-1878.

National and international Conferences

1. Studies on mCL-polyhydroxy-alkanoates using different carbon sources for new biomedical materials, The 24th International Electronic Conference on Synthetic Organic Chemistry IECSOC, 15 Nov.-15. Dec., 2020.

2 Marius Stelian Popa, Irina Lupescu, Cristian Andi Nicolae, Augusta Raluca Gabor, Adriana Nicoleta Frone, Denis Mihaela Panaitescu. Mechanical and thermal properties of blends based on polyhydroxyalkanoates, Simpozionul International "Prioritatile chimiei pentru o dezvoltare durabila" PRIOCHEM - Editia a XVI-a, oct 2020, Proceedings 2020, 57, 38.

Patent applications:

1. Panaitescu Denis Mihaela, Frone Adriana Nicoleta, Nicolae Andi Cristian, Augusta Raluca Gabor, Marius Stelian Popa, Tinca Buruiana, Violeta Melinte Compozitii cu flexibilitate marita pe baza de polihidroxialcanoati si procedeu de obtinere” (ICECHIM), Cererea nr. A/00675/27.10.2020.

2.. Violeta Melinte, Tinca Buruiana, Andeea Laura Scutaru, Lenuta Stroea, Poliuretani termoplastici cu segmente structurale biodegradabile si procedeu de obtinere (ICMM), Cererea nr. A/00083/18.02.2020

PC4: FOTOMAH

Published Articles

1. A. Radu, C. Locovei, V. A. Antohe, M. Socol, D. Coman, M. Manica, A. Dumitru, L. Dan, C. Radu, A. M. Raduta, L. Ion, S. Iftimie, S. Atohe Effects of annealing on the physical properties of ITO thin fimls grown by radio frecquency magnetron sputtering/2020/Digest Journal of Nanomaterials and Biostructures, 15(3), July - September 2020, p. 679 – 687

2. V. Raditoiu, V. Purcar, A. Raditoiu, M. F. Raduly, A. N. Frone, M. Anastasescu, M. Stoica, E. Alexandrescu, R. Somoghi, R. Manea, G. C. Ispas, L. E. Wagner, S. Caprarescu/Sol–gel hybrid films based on organosilanes with long alkyl chains/2020/Journal of Coatings Technology and Research, 17 (5), 2020, p.1389–1399

3. S. Caprarescu, V. Purcar, C. Modrogan Commercial aqueous additives used as eco-friendly corrosion inhibitors for carbon steel in natural seawater/2020/Revue Roumaine de Chimie/ 65(1), 2020, p.77-82.

4. A.I. Barzic, M. Soroceanu. R. Rotaru, V. Harabagiu, R.C. Ciobanu Optical dispersion characteristics of polyvinyl alcohol reinforced with a nanoceramic filler/2020/Materiale Plastice/, 57(1), p.1-7

Proceeding papers

1. S. Caprarescu, A. M. Dancila, C. Modrogan, V. Purcar, „Corrosion Protection of Carbon Steel Using Natural Seaweeds from Seawater”, Proceedings, 2020, 55, p. 1; doi:10.3390/proceedings2020055001.

2. Diana-Ioana Buliga, Aurel Diacon, Ioana Asofiei, Cristian Boscornea, „Stabilization of Photosensitive Curcumin by Microencapsulation”, Proceedings, 2020, 57(1), 96; https://doi.org/10.3390/proceedings2020057096.

National and international Conferences

1. Materials, Methods and Technologies-Twenty second International Conference; Burgas, Bulgaria/poster/Synthesis and characterization of sol-gel TiO2-based materials using tetraethoxysilane (TEOS) and/or methyltriethoxysilane (MTES) as coupling agents/2020, 29 august-1 septembrie 2020

Authors:              Violeta Purcar, Valentin Raditoiu*, Anca Dumitru*, Alina Raditoiu, Monica Florentina Raduly, Raluca Manea, Georgiana Cornelia Ispas, Adriana Frone, Mihai Anastasescu, Simona Caprarescu, Luminita Eugenia Wagner, Sorin Avramescu,

2. International Chemical Engineering and Material Symposium, SICHEM; Bucuresti, Romania/poster/Sol-gel thin films prepared with silane precursors/2020, 17-18 septembrie 2020

Authors:              Raluca Manea, Violeta Purcar*, Valentin Raditoiu, Alina Raditoiu, Monica Florentina Raduly, Cristian Andi Nicolae, Mihai Anastasescu, Georgiana Cornelia Ispas, Luminita Eugenia Wagner

3. Diana-Ioana Buliga, Aurel Diacon, Ioana Asofiei, Cristian Boscornea, „Stabilization of Photosensitive Curcumin by Microencapsulation”, 16th International Symposium “Priorities of Chemistry for a Sustainable Development” PRIOCHEM, Bucuresti, Romania, 28–30 octombrie 2020, poster

4. Nicolaescu Mircea, Carmen Lazau, Corina Orha, Bandas Cornelia, Mina Popescu, Viorel Aurel Serban, Obtaining TiO2 with nanoporous structure by chemical corrosion and thermal oxidation of Ti foils. 26rd International Symposium on Analytical and Environmental Problems, Ungaria, Szeged, 23-24 noiembrie 2020, poster

5. B.-C. Condurache, C. Cojocaru, P. Samoila, V. Harabagiu; “Sorption properties of wool-based composites for cleaning oil spills from the water surface”, Sesiunea de comunicari stiintifice a tinerilor cercetatori ICMPP – „Poarta deschisa spre viitor”, MacroYouth’2020, Editia I-a, Iasi, 19 noiembrie 2020, oral

6. A.-D. Diaconu, V. Harabagiu, C. Peptu; “Polyurethane degradable hydrogels” Sesiunea de comunicari stiintifice a tinerilor cercetatori ICMPP – „Poarta deschisa spre viitor”, MacroYouth’2020, Editia I-a, Iasi, 19 noiembrie 2020, oral

7. D. Blaj, V. Harabagiu, C. Peptu; “Mass spectrometry monitoring of polymerization reactions in the presence of cyclodextrins”; Sesiunea de comunicari stiintifice a tinerilor cercetatori ICMPP - „Poarta deschisa spre viitor”, MacroYouth 2020, Editia I-a, Iasi, 19 noiembrie 2020, oral

8. Mircea Nicolaescu, Paulina Vlazan, Cornelia Bandas, Corina Orha, Carmen Lazau, Viorel Serban, “SYNTHESIS AND CHARACTERIZATION OF “N-N” HETEROJUNCTION BASED ON TiO2-ZnO MATERIALS”, EmergeMAT 3RD INTERNATIONAL CONFERENCE ON EMERGING TECHNOLOGIES IN MATERIALS ENGINEERING 29-30 Octombrie, Bucuresti, Romania;

Presentation of a patent application at a patent exhibition

Lazau Carmen, Poienar Maria, Orha Corina-Ileana, Bandas Cornelia-Elena, Ursu Daniel-Horatiu, Vajda Melinda, Nicolaescu Mircea-Daniel, “Development of „n-p” heterojunctions based on n-type TiO2 and p-type CuMnO2, integrated in sensitive modules”, Ist international exhibition InventCor 17-19.12.2020, Deva

Patent application

Sol-gel nanohybrid bicomponent photocatalytic compositions and process for obtaining these materials/OSIM/A/00645/14.10.2020,

Autori: Violeta Purcar, Valentin Raditoiu, Alina Raditoiu, Florentina Monica Raduly, Raluca Manea, Georgiana Cornelia Ispas, Luminita Eugenia Wagner

PC5 3D-LONG-LIFE

Published Articles

Dimonie Doina et all, Melt Rheology of Renewable Polymers and of New Materials Based on them as Tool in Controlling the 3D/4D Printability, MATERIALE PLATICE 368, No 4, 2020

Sent articles:

-              Mathe Sillvia, Doina Dimonie, Mariana Cristea, Thermal analysis and polarysed light microscopy as methods to study the incresing the durability of PLA designed for 3D printing through nucleation, articol trimis  International Journal of Polymer Analysis and Characterization, 2020, Submission ID: 209373807

-              Dimonie Doina et all, Attempts to Diminish the Drawbacks of Polylactic Acid Designed for 3D/4D Printing Technology-Fused Deposition Modeling, articol transmis Materiale Plastie, 363,  2020

-              Doina Dimonie et all, The 3D/4D printing defects and their influence  on the  functional  behavior of the achieved items, articol trimis Materiale Plasie, 378, 2020

-              M. Cristea, D. Ionita, M. M. Iftime, Dynamic mechanical analysis investigations of PLA-based renewable materials: How are they useful?, Materials 13, 5302 (2020)?      

National and international Conferences

-              Doina DIMONIE, Ionut-Cristian RADU, George VLASCEANU, Catalin ZAHARIA, Nicoleta DRAGOMIR, Ovidiu DIMA, Sorina IFTIMIE, Estimating the 3D printing defects by micro-computed tomography”, Prioritatile Chimiei pentru o Dezvoltare Durabila – PRIOCHEM XV 2019, 30 octombrie – 28 -30 Octombrie 2020, Bucuresti

-              Nicoleta Dragomir, Raluca Augusta Gabor, Ovidiu Dima, Doina Dimonie, ”Structural Parameters Influencing the Shape Memory of New PolymericMaterials Designed for 4D Printing”, lucrare sustinuta laPrioritatile Chimiei pentru o Dezvoltare Durabila – PRIOCHEM XVI 2020, 28 – 30 octombire 2020, Bucuresti

-              M. Cristea, D. Ionita, D. Dimonie; The issue of single-value glass transition temperature of polymers as it is determined from DMA. M5th International Conference on Chemical Engineering, Innovative Materials and Processes for a Sustainable Development – ICCE 2020, Iasi, 28-30.11.2020.

-              D. Ionita, M. M. Iftime, D. Dimonie, M. Cristea, Crystallization and thermo-mechanical behavior of poly(lactic acid): effect of additives, Sesiunea de Comunicari Stiintifice a Tinerilor Cercetatori (ICMPP – Poarta deschisa spre viitor), Editia I, Institutul de Chimie Macromoleculara „Petru Poni” Iasi, 19.11.2020.

-              S. Iftimie, N. Vasile, T. Acsente, C. Locovei, A.I. Radu, A. Radu, L. Ion, V.A. Antohe, G. Dinescu, S. Antohe, On the phzsical properties of indium zinc oxide and aluminum doped zinc oxide thin films grown by radio-frequency magnetron sputtering, Materials, Methods and Technologies, 29.08 – 01.09.2020, Burgas, Bulgaria – prezentare poster

1 work shop: Beatrice Gîrbaciu, Maria Cristea, Silvia Mathe, Doina Dimonie, Study on increasing durability of PLA designed for 3D printing through nucleation with sulphonic ester derivative as nucleating agent, , work presented at Work shop NeXT CHEM,  ICECHIM Bucuresti, may 2020 (work shop)

 1 doctoral thesis under running

Dissemination FOURTH STAGE

ISI Articles

PC1:

1. Sorina Iftimie, Anca Dumitru Enhancing the performance of microbial fuel cells (MFCs) with nitrophenyl modi?ed carbon nanotubes-based anodes, (2019) Applied Surface Science 492 661–668), FI 6,182 (Red zone) Published

2.C. M. Damian, Madalina Ioana Necolau, Iulia Elena Neblea, Eugeniu Vasile, Horia Iovu, Synergistic Effect of Graphene Oxide Functionalized with SiO2 Nanostructures in the Epoxy Nanocomposites, Applied Surface Science , 507, 2020, 145046,  FI 6,182 (Red zone), Published

3. M?d?lina-Ioana Necolau and Andreea-M?d?lina Pandele, Recent Advances in Graphene Oxide-Based Anticorrosive Coatings: An Overview, Coatings 2020, 10, 1149, 15 pp. FI 2,581 (Yellow zone), Published

4. Teodor Sandu  Anita Laura Chiriac  Boyko Tsyntsarski  Ivanka Stoycheva  Simona C?pr?rescu  Celina Maria Damian  Tan?a Verona Iordache  Delia P?troi  Virgil Marinescu Andrei Sarbu Advanced hybrid membranes for efficient nickel retention from simulated wastewater, Polymer International, January 2021,  DOI: 10.1002/pi.6183, Factor de impact 2,574 (Yellow zone) Published

5. Claudiu Locovei, Anita-Laura Chiriac, Andreea Miron, Sorina Iftimie, Vlad-Andrei Antohe, Andrei Sarbu, and Anca Dumitru, Synthesis of titanium nitride via hybrid nanocomposites based on mesoporous TiO2 /acrylonitrile, Scientific Reports 11 (2021) 5055, Factor de impact 3,998 (Red zone). Published

PC2:

1. I.C. Gîfu, M.E. Maxim, L.O. Cinteza, M. Popa, L Aricov, A.R. Leonties, M. Anastasescu, D.F. Anghel, R. Ianchis, C.M. Ninciuleanu, C.L. Nistor, C. Petcu, „Antimicrobial Activities of Hydrophobically Modified Poly(Acrylate) Films and Their Complexes with Different Chain Length Cationic Surfactants”, Coatings, 9, 244, 2019., Published

2. C. Petcu, E. Alexandrescu, A. B?lan, M.A. T?nase, L.O. Cintez?, „Synthesis and Characterisation of Organo-Modified Silica Nanostructured Films for the Water-Repellent Treatment of Historic Stone Buildings”, Coatings, 10(10), 1010, 2020. Published

3. C. Nichita, F. M.Al-Behadili, E. Vasile, I. Stamatin, „Silver nanoparticles synthesis. Bioreduction with galic acid and extracts from Cyperus rotundus L.”, Digest Journal of Nanomaterials and Biosturctures, 15(2), 419-433, 2020. Published

4. M.A. Tanase, M. Marinescu, P. Oancea, A. Raducan, C.I. Mihaescu, E. Alexandrescu, C.L. Nistor, L.-I. Jinga, L.M. Ditu, Cristian Petcu, L.O. Cinteza, „Antibacterial and Photocatalytic Properties of ZnO Nanoparticles Obtained from Chemical versus Saponaria Officinalis Extract-Mediated Synthesis”, Molecules, 26, 2072, 2021. Published

5. R. Grigore, B. Popescu, ?.V. Berte?teanu, C. Nichita, I.D. Oa??, G.S Munteanu., A. Nicolaescu, P.L. Bejenaru, C.B. Simion-Antonie, D. Ene, R. Ene, “The Role of Biomaterials in Upper Digestive Tract Transoral Reconstruction”, Materials, 14(6):1436, 2021. Published

PC3:

1. Poly(3-hydroxybutyrate) modified by nanocellulose and plasma treatment for packaging applications, 2018, Polymers 10, 1249, D. M. Panaitescu, E. R. Ionita, C. A. Nicolae, R. A. Gabor, M. D. Ionita, R. Trusca, B-E. Lixandru, I. Codita, G. Dinescu – Published

2. Studies on polyhydroxyalkanoates biosynthesis by some Pseudomonas spp. Strains, 2019, Romanian Biotechnolodical Letters 24(3): 388-394, M-G. Vladu, M-M. Petrescu, A. Stefaniu, G. Savoiu, M. Spiridon, M. C. Eremia, I. Lupescu – Published

3. Poly(3-hydroxybutyrate) modified by plasma and TEMPO-oxidized celluloses, 2020, Polymers, 12, 1510, D.M. Panaitescu, S.Vizireanu, S.A. Stoian, C.-A. Nicolae, A.R. Gabor, C.M. Damian, R. Trusca, L.G. Carpen, G. Dinescu – Published

4. Biocomposite foams based on polyhydroxyalkanoate and nanocellulose: Morphological and thermo-mechanical characterization, 2020, International Journal of Biological Macromolecules, 164, 1867-1878, D.M. Panaitescu, R. Trusca, A.R. Gabor, C.A. Nicolae, A. Casarica – p Published

5. D. M. Panaitescu, C. A. Nicolae, V. Melinte, A. L. Scutaru, R. Gabor, M S Popa, M Oprea, T Buruiana, "Influence of microfibrillated cellulose and soft biocomponent on the morphology and thermal properties of thermoplastic polyurethanes", Journal of Applied Polymer Science, accepted 2021

6. M S Popa, D. M. Panaitescu, "Biodegradable polyhydroxybutyrate blends: A comprehensive review”, Progress in Materials Science,2021 , sent

PC4:

1. Treatment of Crystal Violet dye from synthetic solution using membranes doped with natural fruit extract/2018/CLEAN - Soil, Air, Water/S. Caprarescu, A. R. Miron, V. Purcar, A.-L. Radu, A. Sarbu, C.-A. Nicolae, M. (Neagu) Pascu, D. Ion-Ebrasu, V. Raditoiu/ Published

2. Synthesis and morpho-structural properties of TiO₂-based materials/2019/Journal of Optoelectronics and Advanced Materials/V. Purcar, V. R?di?oiu, C.-A. Nicolae, A. N. Frone, A. R?di?oiu, F. M. Raduly, R. ?omoghi, R. A. Gabor, S. C?pr?rescu/ Published

3. Antireflective coating based on TiO₂ nanoparticles modified with coupling agents via acid-catalyzed sol-gel method/2019/Applied Surface Science/V. Purcar, V. R?di?oiu, A. Dumitru, C.-A.Nicolae, A. N. Frone, M. Anastasescu, A. R?di?oiu, M. F. Raduly, R. A. Gabor, S. C?pr?rescu/ Published

4. Study of corrosion efficiency of mild steel using commercial liquid additives for fish in natural water/2019/Revista de Chimie/S. Caprarescu, C. Modrogan, V. Purcar, A. M. Dancila, R. C. Fierascu/ Published

5. Removal of Nickel Ions from Synthetic Wastewater Using Copolymers/Natural Extract Blend Membranes/2019/Romanian Journal of Physics/S. Caprarescu, D. Ion-Ebrasu, A. Soare, V. Purcar, A.-L. Radu, A.Sarbu, M.(Neagu) Pascu, C. Modrogan, A. M. Dancila, C. Deleanu/ Published

6. Effects of annealing on the physical properties of ITO thin films grown by radio frecquency magnetron sputtering/2020/Digest Journal of Nanomaterials and Biostructures/A. Radu, C. Locovei, V. A. Antohe, M. Socol, D. Coman, M. Manica, A. Dumitru, L. Dan, C. Radu, A. M. Raduta, L. Ion, S. Iftimie, S. Atohe/ Published

7. Sol–gel hybrid films based on organosilanes with long alkyl chains/2020/Journal of Coatings Technology and Research/V. R?di?oiu, V. Purcar, A. R?di?oiu, M. F. Raduly, A. N. Frone, M. Anastasescu, M. Stoica, E. Alexandrescu, R. ?omoghi, R. Manea, G. C. Ispas, L. E. Wagner, S. C?pr?rescu Published

8. Commercial aqueous additives used as eco-friendly corrosion inhibitors for carbon steel in natural seawater/2020/Revue Roumaine de Chimie/S. Caprarescu, V. Purcar, C. Modrogan/ Published

9. Optical dispersion characteristics of polyvinyl alcohol reinforced with a nanoceramic filler/2020/Materiale Plastice/A.I. Barzic, M. Soroceanu. R. Rotaru, V. Harabagiu, R.C. Ciobanu/ Published

10. Preparation and Characterization of Some Sol-Gel Modified Silica Coatings Deposited on Polyvinyl Chloride (PVC) Substrates/2021/ Coatings, 11, 2021, 11;/V. Purcar, V. R?ditoiu, A. R?ditoiu, R. Manea, F. M. Raduly, G. C. Ispas, A. N. Frone, C. A. Nicolae, R. A. Gabor, M. A., H. Stroescu, S. C?pr?rescu/ Published

11. Bilayer coatings based on silica materials and iron (III) phthalocyanine – Sensitized TiO₂ photocatalyst/2021/Materials Research Bulletin, 138, 2021, 111222/V. Purcar, V. Raditoiu, A. Raditoiu, F. M. Raduly, R. Manea, A. Frone, M. Anastasescu, G. C. Ispas, S. C?pr?rescu/ Published

12. Preparation and Characterization of Silica Nanoparticles and of Silica-Gentamicin Nanostructured Solution Obtained by Microwave-Assisted Synthesis /2021/V. Purcar, V. R?di?oiu, C. Nichita, A. B?lan, A. R?di?oiu, S. C?pr?rescu, F. M. Raduly, R. Manea, R. ¸Somoghi , C.-A. Nicolae, I. Raut, L. Jecu/ Published

13. Efficient and versatile laboratory electrodialysis device for removal of iron ions from a synthetic wastewater/2021/S. C?pr?rescu, V. Purcar, V. R?di?oiu, C. A. Nicolae, C. Modrogan, A. A. Scarlat/accepted

PC5:

1. Dimonie Doina et all, Some aspects conditioning the achieving of filaments for 3d printing  from physical modified corn starch, Materiale Plastice 2019 2019, Volume 57, Issue 2, 351-359, Published

2. Dimonie Doina, Dragomir Nicoleta, Rusandica Stoica, Attempts to Diminish the Drawbacks of Polylactic Acid Designed for 3D/4D Printing Technology-Fused Deposition Modeling, MATERIALE PLASTICE, 58 (1), 2021, pp. 142-153, Published

3. Dimonie Doina, Dragomir Nicoleta, Trusca Roxana, Jecu Luiza, Marius Ghiurea, The 3D/4D Printing Defects And Their Influence On The Functional Behavior Of The Items Achieved By 3d Printing Or Classial Procedure From New Renewable Compounds, MATERIALE PLASTICE, 58 (2), 2021 2021,http://doi.org/10.37358/mat.Plast.1964, Published

4. Silvia Mathe, Doina Dimonie, Mariana Cristea, Thermal analysis and polarized light microscopy as methods to study the increasing of the durability of PLA designed for 3D printing, International journal of Polymeric Analysisi and Charaterization, 2021, DOI:10.1080/1023666X.2021.1880111, Published

5. Silvia MATHE, Doina Dimonie, Nicoleta Dragomir, Daniela Gheorghiu, Roxana Trusca, Sorina Iftimie, Maria Manuela IFTIME, In depth characterization of pla stereocomplexed compounds designed for increasing the durability of 3D printing grade PLA International Journal of Polymer Analysis and Characterization/, 2021, ID: 209373807, sent

Non-ISI Articles

PC4:

1. Preparation of transparent sol-gel modified silica hydrophobic coatings on plastic substrates/2019/ Proceedings, 29, 79, / Violeta Purcar, Raluca Manea, Valentin Raditoiu, Alina Raditoiu, Florentina Monica Raduly, Adriana Frone, Mihai Anastasescu, Georgiana Cornelia Ispas, Luminita Eugenia Wagner/ Published doi:10.3390/proceedings2019029079

2. Corrosion Protection of Carbon Steel Using Natural Seaweeds from Seawater/2020/Proceedings, 29, 55, /Simona C?pr?rescu, Annette Madelene D?ncil?, Cristina Modrogan, Violeta Purcar/ Published

doi:10.3390/proceedings2020055001

3. Stabilization of Photosensitive Curcumin by Microencapsulation/2020/Proceedings 2020, 57(1), 96/Diana-Ioana Buliga, Aurel Diacon, Ioana Asofiei, Cristian Boscornea/ Published

doi:10.3390/proceedings2020057096

Communications

PC1:

1. Sesiunea ?tiin?ific? Anual? a Facult??ii de Fizic? din Universitatea din Bucure?ti, 21 – 22 Iunie, 2018, Bucure?ti, România Photovoltaic cells with polymeric/chlorophyll-a thin films – electrical and photo-electrical characterization  Calugar Alina.    Iftimie Sorina, Radu Adrian,  Antohe Vlad, Dan Luminita, Coman Diana, Ion Lucian, Antohe Stefan

2. 12th International Conference on Physics of Advanced Materials, 22 – 28 Septembrie, 2018, Heraklion, Creta, Grecia Study of the electrical and photo-electrical behavior of composite thin films based photovoltaic structures, Radu Adrian, Iftimie Sorina, Antohe Vlad, Locovei Claudiu, Dumitru Anca, Calugar Alina, Dan Luminita, Antohe Stefan

3. 24^th International Symposium on Analytical and Environmental Problems (ISAEP 2018), 8-9 Octombrie 2018, Szeged, Ungari, poster, 2018 Carmen Lazau, Corina Orha, Daniel Urs, Mircea Daniel Nicolaescu, Melinda Vajda, „Preparation of mesoporous TiO₂ by sol-gel and hydrothermal methods“, , Published in Proceedings of the 24^th International Symposium on Analytical and Environmental Problems, ISBN 978-963-306-623-2,–

4. Simpozionul Interna?ional PRIORIT??ILE CHIMIEI PENTRU O DEZVOLTARE DURABIL?” (PRIOCHEM XIV), 10-12 Octombrie 2018, Bucure?ti, Romania, comunicare orala -Andreea MIRON, Andrei SARBU, Anita-Laura RADU, “A guide with the most common plastics”

5. 3rd International Conference on Biopolymers and Polymer Chemistry, 21-24.10.2018, Praga, Cehia, poster Celina Maria DAMIAN, Brindusa BALANUCA, Horia IOVU, “Nanocomposite Materials Reinforced with New Hybrid Layered Silicates-Graphene Oxide Structures”,

6. 12^th International Conference on Physics of Advanced Materials, 22–28 Septembrie 2018, Heraklion, Creta, Grecia, poster,  Anca DUMITRU, “Enhancing the performance of microbial fuel cells (MFCs) with nitrophenyl modified carbon nanotube – based anodes”,

7. 18^th International Balkan Workshop on Applied Physics and Materials Science (IBWAP 2018), 10-13 Iulie 2018, Constan?a, Romania, poster , Silviu VULPE, Florin NASTASE, Andrei AVRAM, Claudia NASTASE, Octavian SIMIONESCU, Cosmin ROMANITAN, Raluca GAVRILA, Bogdan BITA, Anca DUMITRU, Mircea DRAGOMAN, “Impact of thermal treatment upon morphology and cristalinity of (ZnO/Al₂O₃)/TiO₂  thin films deposited by RF sputtering”, ,

8. Elecnano 8, 29-31 Mai 2018, Nancy, France, comunicare tip poster -A. DUMITRU, C. BRADU, S. IFTIMIE, S. VULPE, S. AVRAMESCU, A. OLARU, A. RADU, „Carbon nanostructures as 3D modified anode for microbial fuel cell”.

9. NeXT-Chem Tehnologii Inovatoare Trans-Sectoriale, 6 mai 2019, Bucuresti, prezentare orala, MIRON Andreea, DUMITRU Marinela-Victoria, RADU Anita-Laura, SANDU Teodor, ZAHARIA Anamaria, IORDACHE Tanta-Verona, SARBU Andrei, “Advanced hybrid materials for different uses”,

10. 9th International Conference of the Chemical Societies of the South-East European Countries, Targoviste, 8-10 mai 2019, poster, Radu Anita-Laura, Sarbu Andrei, Andreea Miron, Zaharia Anamaria, Gavrila Ana-Mihaela, Iordache Tanta-Verona, Sandu Teodor, Coman Alina-Elena, Apostol Steluta, Damian Celina, “Inorganic-organic composites with enhanced properties for advanced ceramics”,

11. Sesiune comunicari studenti, master SIGONAPOL, 10 mai 2019, Bucuresti comunicare orala, Andreea Miron, Celina-Maria Damian, Anita-Laura Radu, Andrei Sarbu, “Hibride polimerice de tip anorganic-organic ca precursori pentru ceramici avansate”,

12. “World Congress on Functional Materials and Nanotechnology” (WCFMN 2019), 12-16 mai 2019, Valencia, Spania , poster, Anamaria Zaharia, Anita-Laura Radu, Ana-Mihaela Gavrila, Teodor Sandu, Andreea Miron, Marilena Dumitru, Andrei Sarbu, Carmen Sirbu, Tanta-Verona Iordache, “Hybrid microparticles for the retention/release of pesticides with application in agriculture”,

13. 8th Graduate Student Symposium on Molecular Imprinting, 28-30 august 2019, Berlin, Germania, poster,  A. Miron_, A.-L. Radu, A. Zaharia, C.-T. Cojocaru, A.-M. Gavrila, T. Sandu, E.-B. Stoica, A. Sarbu, C. Sirbu, T.-V. Iordache, “Zeolite microparticles modified by host-guest molecular imprinting for pesticides retention”,

14. 8th Graduate Student Symposium on Molecular Imprinting, 28-30 august 2019, Berlin, Germania, poster,  Ana-Mihaela Gavrila, Ana Lorena Ciurlica, Andrei Sârbu, Anamaria Zaharia, Anita-Laura Radu, Steluta Apostol, Elena-Bianca Stoica, Constantin Nicolae Toader, Tan?a-Verona Iordache, “Preparation and characterization of molecularly imprinted particles for sulphur mustard determination”,

15. A 27-a Sesiune de comunic?ri ?tiin?ifice “Progrese în ?tiin?a compu?ilor organici ?i macromoleculari”, 2-4 octombrie 2019, Iasi, Romania, poster, Anita-Laura Radu, Andreea Miron, Anamaria Zaharia, Ana-Mihaela Gavrila, Tanta-Verona Iordache, Crina-Thea Cojocaru, Razvan-Edward Botez, Bianca-Elena Stoica, Celina-Maria Damian, Andrei Sarbu, „Novel nanocomposites based on mesoporous titania/acrylonitrile polymer: synthesis and characterization”,

16. A 27-a Sesiune de comunic?ri ?tiin?ifice “Progrese în  ?tiin?a compu?ilor organici ?i macromoleculari”, 2-4 octombrie 2019, Iasi, Romania, poster,  Bianca-Elena Stoica, Ana-Lorena Ciurlica, Tanta-Verona Iordache, Andrei Sarbu, Anamaria Zaharia, Anita-Laura Radu, SanduTeodor, Steluta Apostol, Monica Duldner, Ana-Mihaela Gavrila, „Preparation and characterization of non-imprinted films doped with conducting polymers”,

17. A 27-a Sesiune de comunic?ri ?tiin?ifice “Progrese în ?tiin?a compu?ilor organici ?i macromoleculari”, orala,  2-4 octombrie 2019, Iasi, Romania Teodor Sandu, Andrei Sârbu, Raul-Augustin Mitran, Nicolae St?nic?, Delia P?troi, Virgil Marinescu, Maria Luiza Jecu, Melania Liliana Arsene, Anita Laura Radu, Marinela Victoria Dumitru, Tan?a Verona Iordache, Ana Mihaela Gavrila, Stelu?a Apostol, ”Innovative composite beads based on polymer blends and mnps and their use in biotechnology”,

18. TIM19 Physics Conference May 2019, Timisoara, Romania, poster, C. Lazau, C. Orha, C. Bandas, M. Nicolaescu, M. Vajda, M. Popescu, “Synthesis and characterization of mesoporous TiO₂^”,

19. A XI-a edi?ie a Conferin?ei Interna?ionale de ?tiin?a ?i Ingineria Materialelor – BRAMAT 2019 13-16 martie 2019, Poiana Brasov, Romania, prezentare orala C.M. Damian, M.I. Necolau, I.E. Neblea, E. Vasile, H. Iovu, Synergistic effect of graphene oxide functionalized SiO₂ nanostructures in the epoxy nanocomposites, 

20. 21st Romanian International Conference on Chemistry and Chemical Engineering (RICCCE 2019), 6-9 septembrie 2019, Mamaia, Romania, prezentare orala Celina Maria Damian, Madalina Ioana Necolau, Iulia Elena Neblea, Eugeniu Vasile, HoriaIovu, Synthesis of Hybrid Nanostructures Based on Graphene Oxide and the Evaluation of Their Influence in Epoxy Nanocomposites,

21. 21st Romanian International Conference on Chemistry and Chemical Engineering (RICCCE 2019), 6-9 septembrie 2019, Mamaia, Romania, poster M?d?lina Ioana Necolau, Ana Maria Paraschiv, Celina Maria Damian, Br?ndu?a B?l?nuc?, Horia Iovu, Advanced Studies on Biobased Epoxy Network Curing Reactions and Thermal Properties

22. International Balkan Workshop on Applied Physics, 2019 Iulie 16-19, Constan?a, România – poster, Anca Dumitru, Vlad Basceanu, Robert Maaz, ClaudiuLocovei, Sorin AvramescusiSorinaIftimie, Relation between the morphology and nitrogen environmet of nitrogen-containing carbon nanostrucutres and their performance as anode modifier in microbial fuel cell,

23. YUCOMAT 2019 & WRTCS 2019, 2–6 septembrie 2019, Herceg Novi, Montenegro– poster Anca Dumitru, Sorina Iftimie, Anita Radu, Andreea Miron, Andrei Sarbu, Cristian Panaiotu, Claudiu Locovei, Carmen Lazau, „Synthesis of titanium nitride via hybrid polymeric composites”,

24. A 27-a Sesiune de comunic?ri ?tiin?ifice “Progrese în ?tiin?a compu?ilor organici ?i macromoleculari”, 2-4 octombrie 2019, Iasi, Romania. Prezentare orala, Ilie Daniel ?împu, Andrei Sârbu, Anita-Laura Radu, “Cercet?ri de ob?inere ?i caracterizare a nanocompozitelor Titaniu-Carbon”,

25. NeXTChem 2^nd edition, 9-10 iunie 2020, Bucuresti prezentare orala, Andreea, CIURLICA Ana-Lorena, DUMITRU Marinela-Victoria, Chiriac Anita-Laura,  STOICA Elena-Bianca, IORDACHE Tanta-Verona, SARBU Andrei INNOVATIVE HYBRIDS FOR ADVANCED CERAMICS MIRON

26. Materials, Methods & Technologies 29 August – 1 September 2020, Burgas, Bulgaria, poster,  Anca Dumitru , Andreea Miron, Anita Radu, Andrei Sarbu, Sorina Iftimie , Cristian Panaiotu, Claudiu Locovei , Carmen Lazau, Synthesis of titanium nitride via nanocomposites based on mesoporous titania/acrylonitrile polymers,

27. Materials, Methods & Technologies 2020, 22nd International Conference, 29 August – 1 September 2020, Burgas, Bulgaria, Comunicare orala on site, Daniel Timpu, Andrei Sarbu, Anita-Laura Radu, Miron Andreea, Study of an innovative manufacturing process for titanium nitride ceramic via hybrid polymer composites

28. 5th International Conference on Chemical Engineering (ICCE 2020) – October 28-30, Iasi Comunicare orala : Ilie Daniel Timpu, Andrei Sarbu, Anita-Laura Radu, Miron Andreea Thermal process for obtaining titanium nitride nano-powder via vinyl polymer composites

29. 4th European Chemistry Conference-ECC 2021 Inorganic-Organic Composites Obtained by Host-Guest Methods for  Advanced Applications, Miron Andreea, Stoica Bianca, Dumitru Marinela, Neblea Iulia, Iordache Tanta Verona, Radu Anita, Sarbu Andrei, 26.03.2021, prezentare orala

PC2

1. XXXV-a Conferin?a Na?ional? de Chimie/ conferin??/ ZnO nanostructured hybrid materials with antibacterial activity for functional coatings/ 2018

2. 1st International Conference on Emerging Technologies in Materials Engineering EmergeMAT/ conferin??/ Multifunctional Hybrid Coatings Based on ZnO and Ag NPs for Preventive Conservation of Paper Materials/ 2018

3. Priorit??ile Chimiei pentru o Dezvoltare Durabil? – PRIOCHEM editia a XIV-a/ conferin??/ Study on Antibacterial Activity of Silver Nanoparticles Against Bacteria from Pseudomonas Sp. And Bacillus Sp./ 2018

4. 4th International Congress on Biomaterials & Biosensors (BIOMATSEN 2019)/ conferin??/ Green Synthesis and Characterization of Cu Nanoparticles for Functional Coatings with Antibacterial Properties/ 2019

5. 9th International Conference of the Chemical Societies of the South-East European Countries/ conferin??/ Green Synthesis of Silver Nanoparticles with Superior Antimicrobial Activities Using Onion Extract/ 2019

6. EuroNanoForum/ conferin??/ Multifunctional Coatings Based on Metallic and Metal Oxide Nanoparticles/ 2019

7. Priorit??ile Chimiei pentru o Dezvoltare Durabil? – PRIOCHEM editia a XV-a/ conferin??/ Novel Formulations of PEG-Silica Phase Changing Materials (PCMs) with Applications in Passive Storage of Thermal Energy/ 2019

8. Priorit??ile Chimiei pentru o Dezvoltare Durabil? – PRIOCHEM editia a XV-a/ conferin??/ Composite Hydrogels Based on Poly (Methacrilyc Acid) Reinforced with Laponite Inorganic Filler/ 2019

9. Priorit??ile Chimiei pentru o Dezvoltare Durabil? – PRIOCHEM editia a XV-a/ conferin??/ Preparation and Characterization of Vegetable Oil-Based Microemulsions/ 2019

10. 6th Nano Today 2019 Preparation and characterization of Ag decorated ZnO nanoparticles for multifunctional protective coatings on paper and textiles, Cinteza Ludmila, Bala Daniela, Raducanu Adina, Stanculescu Ioana, Chirila Laura, Rascov Marian , Scomoroscenco Cristina, Gifu Ioana, Trica Bogdan, Petcu Cristian, Lisabona 16.06-20.06.2019 Poster

11. National Online Conference of Biophysics/ conferin??/ Toxicity versus bioactivity - strategies to increase the biocompatibility of metallic and metal oxide nanoparticles/ 2020

12. International Chemical Engineering and Material Symposium (SICHEM 2020)/ conferin??/ Structural and Morphological Characterization of Some Plant Extract-Mediated Metallic and Metal Oxide Nanoparticles/ 2020

13. International Conference “39th Dyes in History and Archaeology” 39DHA 2020/ conferin??/ Novel ZnO nanoparticle – based polymeric coatings for UV protection of natural dyes in historic textiles/ 2020

14. Priorit??ile Chimiei pentru o Dezvoltare Durabil? – PRIOCHEM editia a XVI-a/ conferin??/ Synthesis and Morphological Investigation of Flower-Like ZnO Nanostructures/ 2020

15. Priorit??ile Chimiei pentru o Dezvoltare Durabil? – PRIOCHEM editia a XVI-a/ conferin??/ Layer-By-Layer Preparation of Ormosil Nanomaterial for Amphiphobic Surfaces/ 2020

16. Priorit??ile Chimiei pentru o Dezvoltare Durabil? – PRIOCHEM editia a XVI-a/ conferin??/ Synthesis and Characterization of Superhydrophobic Films with Raspberry –Like Silica Nanoparticles as Functional Coatings/ 2020

17. 3rd International Conference on Emerging Technologies in Materials Engineering, EmergeMAT/ conferin??/ Nano-Structured Hybrid Films as Protection Coatings, Prepared by Sol-Gel Process/ 2020

18. 3rd International Conference on Emerging Technologies in Materials Engineering, EmergeMAT/ conferin??/ Composite Materials Based on Poly(Methacrylic) Acid and Three Different Fillers/ 2020

19. 3rd International Conference on Emerging Technologies in Materials Engineering, EmergeMAT/ conferin??/ Amphiphobic Silica Based Nanomaterials with Tunable Roughness for Antibacterial Coatings/ 2020

20. 3rd International Conference on Emerging Technologies in Materials Engineering, EmergeMAT/ conferin??/ Facile Layer-by-Layer Synthesis of Novel Functional ZnO Nanoparticle – Based Coatings With Antibacterial Properties/ 2020

PC3

1. 1st Bucharest Polymer Conference- BPC, Romania, 6-8 June, 2018 Studies of some bacterial strains producing polyhydroxyalkanoates, poster

2.Sixth edition of the International Colloquium ‘Physics of Materials’, Bucharest, Romania, 15-16 November 2018 Physico-chemical characterization of surface modified cellulose, poster

3. 9th International Conference on Biopolymers and Polymer Sciences, Bucharest, Romania, 19-21 November 2018 Porous structures from nanocellulose and biopolymers for biomedical application, poster

4. 19émes Journées des cyclodextrines, 11-12 Octombrie 2018, Besancon; Fran?a,  Couplage oxydation avancée/biosorption sur des cyclodextrines pour traiter des pollutions industrielles de la filière traitement de surface. Bradu Corina, Morin-Crin Nadia, Crin Gregorio, prezentare orala. 11.10-12.10.2018

5. 19émes Journées des cyclodextrines, 11-12 Octombrie 2018, Besancon; Fran?a , Complexation d’alkylphénols sur des polymères de cyclodextrines Bradu Corina, Morin-Crin Nadia, Fourmentin Marc, Torri Giangiacomo, Miloiu Elena. Crin Gregorio, poster 11.10-12.10.2018

6.21st Romanian International Conference on Chemistry and Chemical Engineering, Sept 4-7 2019, Constanta, Romania Synthesis, morphology and properties of novel aliphatic biodegradable polyurethanes, poster

7.Microbial production of poly-hydroxyalkanoates from structural correlated substrates, 15th International Symposium Priorities of Chemistry for a Sustainable Development, Bucharest, Romania, 30 Oct–1 Nov, 2019 poster

8. 4th International Congress on Biomaterials & Biosensors (BIOMATSEN), Oludeniz, Turkey, May 12-18, 2019 Cross-linked nanocellulose foams using mono- and disaccharides, poster

9. 5th Central and Eastern European Conference on Thermal Analysis and Calorimetry (CEEC-TAC5), Rome, Italy, August 27-30, 2019 Thermal properties of PHBV nanocomposites with controlled degradability, poster

10. CEEC-TAC5, Rome, Italy, August 27-30, 2019, Dynamic mechanical properties of polyhdroxybutirate reinforced with cellulose microfibrils, poster

11. 21^st Romanian International Conference on Chemistry and Chemical Engineering, Constanta, ROMANIA – Sept 4 – 7, 2019 Structural, mechanical and dielectric properties of polyhydroxyalkanoate biocomposites, poster

12. 21^st Romanian International Conference on Chemistry and Chemical Engineering, Constanta- Mamaia, ROMANIA – September 4 – 7, 2019 Surface modified bacterial cellulose for packaging application, poster

13. 9th International Conference of the Chemical Societies of the South-East European Countries,  Effect of TiO2 on the properties of polyhydroxyalkanoates, Stoian Sergiu, Nicolae Cristian Andi, Gabor Raluca, Ghiurea Marius, Pasnaitescu Denis, Targoviste Romania, 08.05-11.05 2019 Prezentare orala

14. The 24th International Electronic Conference on Synthetic Organic Chemistry IECSOC, 15 Nov.-15. Dec., 2020 Studies on mcl-polyhydroxy-alkanoates using different carbon sources for new biomedical materials, poster

15. Simpozionul Interna?ional „Priorit??ile chimiei pentru o dezvoltare durabil?” PRIOCHEM – Edi?ia a XVI-a, oct 2020 Mechanical and thermal properties of blends based on polyhydroxyalkanoates, prezentare orala

PC4:

1. 5^th International Conference "Geography, Environment and GIS, for students and young researchers"; Targoviste, Romania/poster/Gentamicin-loaded silica nanoparticles obtained by microwave synthesis/2018;

2. 5^th International Conference "Geography, Environment and GIS, for students and young researchers"; Targoviste, Romania/poster/Nanostructured materials based on zno with controlled shape and sizes, obtained by sol-gel process/2018;

3. 5^th International Conference "Geography, Environment and GIS, for students and young researchers"; Targoviste, Romania/poster/Corrosion protection of mild steel in natural water using different commercial liquid additives/2018;

4. 5^th International Conference "Geography, Environment and GIS, for students and young researchers"; Targoviste, Romania/poster/Recovery of copper ions from synthetically wastewater using polymer membrane with silane/2018;

5. 5^th International Conference "Geography, Environment and GIS, for students and young researchers"; Targoviste, Romania/poster/Study of corrosion efficiency of metals using commercial liquid additive in acidic medium/2018;

6. 18^th International Balkan Workshop on Applied Physics and Materials Science; Constanta, Romania/poster/Influence of silane precursor on the TiO₂ materials/2018;

7. 18^th International Balkan Workshop on Applied Physics and Materials Science; Constanta, Romania/poster/Corrosion protection of mild steel using different commercial extracts from insect and mollusk/2018;

8. The International Symposium "Priorities of Chemistry for a Sustainable Development" – PRIOCHEM XIV-th edition; Bucuresti, Romania/poster/Application of natural fruit extracts as green corrosion inhibitors for steel in natural water/2018;

9. 6^th International Colloquium “Physics of Materials” (PM-6); Bucuresti, Romania/poster/Transparent thin films based on TiO₂ sensitized with phtalocyanine/2018;

10. The International Symposium "Priorities of Chemistry for a Sustainable Development" – PRIOCHEM XIV-th edition; Bucuresti, Romania/ poster/Photocatalytic activity of TiO₂ sensitized with azomethin – phthalocyanine metal complexes/2018;

11. 15^th International Conference on Nanosciences and Nanotechnologies; Thessalonik, Grecia/poster/Synthesis and characterization of TiO₂ (doped-undoped) nanocrystals through sol-gel and hydrothermal methods/2018;

12. 12^th International Conference on Physics of Adavanced Materials – ICPAM 12; Heraklion, Grecia/conferinta plenara, prezentare orala/Self-assembling: a step in the development of organized and complex matter/2018;

13. 3^rd Automn School on Physics of Adavanced Materials – PAMS 3; Heraklion, Grecia/prezentare orala/Functional polymers: generating new properties through physical and chemical interaction between structurally different (macro)molecules/2018;

14. 12^th International Conference on Physics of Advanced Materials; Heraklion, Creta, Grecia/poster/Antireflective and hydrophilic surfaces obtained from sol-gel TiO₂ materials/2018;

15. NeXT-Chem; Bucuresti, Romania/ poster/ Preparation and characterization of bilayer coatings based on silica materials and iron (III) phthalocyanine - sensitized TiO₂ photocatalyst/2019;

16. 9^th International Conference of the Chemical Societies of the South-East European Countries;  Targoviste, Romania/poster/Sol-gel bilayer coatings based on silica hybrids and TiO₂ sensitized with iron (III) phthalocyanine/2019;

17. 6^th International Conference Geography, Environment and GIS for students and young researchers; Targoviste, Romania/poster/Treatment of paint wastewater using natural plant,  crusched granite and anion exchange resin/2019;

18. 19^th International Balkan Workshop on Applied Physics and Materials Science; Constanta, Romania/poster/Facile preparation in two steps of sol-gel coatings based on silica materials and TiO₂ nanoparticles/2019;

19. 19^th International Balkan Workshop on Applied Physics and Materials Science; Constanta, Romania/poster/Corrosion protection of mild carbon steel using seaweed/2019;

20. The International Symposium “Priorities of chemistry for a sustainable development-PRIOCHEM” XVth Edition; Bucuresti, Romania/prezentare orala/Preparation of transparent sol-gel modified silica hydrophobic coatings on plastic substrates/2019;

21. 21^st Romanian International Conference on Chemistry and Chemical Engineering; Constanta-Mamaia, Romania/poster/Synthesis and characterization of photocatalytic TiO₂ sol–gel thin films/2019;

22. 21^st Romanian International Conference on Chemistry and Chemical Engineering; Constanta-Mamaia, Romania/prezentare orala/Self-cleaning waterborne paints based on TiO₂ sensitized with mixed chromophore dyes/2019;

23. The 12^th Edition of the Symposium with International Participation: New Trends and Strategies in the Chemistry of Adavance Materials of Relevance in Biological Systems, Techniques and Environmental Protection; Timisoara, Romania/poster/Synthesis and structural characterization of black TiO₂/2019;

24. The 12^th Edition of the Symposium with International Participation: New Trends and Strategies in the Chemistry of Adavance Materials of Relevance in Biological Systems, Techniques and Environmental Protection; Timisoara, Romania/ conferinta plenara/Polysaccharide materials for health and high-tech application/2019;

25. 21^th International Conference on Nanoscience, Nanotechnology and Advanced Materials; Praga, Czech Rep./prezentare orala/Synthesis, characterization and photocatalytic activity of Cu/guanidine/disiloxane complexes/2019;

26. Zilele Academice Iesene, A XXVII sesiune de comunicari, Progrese in Stiinta Compusilor Organici si Macromoleculari; Iasi, Romania/prezentare orala/Polymer networks obtained by photoinitiated thiol-ene coupling/2019;

27. Zilele Academice Iesene, A XXVII sesiune de comunicari, Progrese in Stiinta Compusilor Organici si Macromoleculari; Iasi, Romania/prezentare orala/Sorbenti pe baza de lana pentru indepartarea uleiurilor din apele reziduale/2019;

28. International Conference on Polymer Processing and Engineering; Galati, Romania/prezentare orala/Optical dispersion characteristic of polyvinyl alcohol reinforced with a nanoceramic filler/2019;

29. 11^th International Conference on Materials Science&Engineering – BRAMAT; Brasov, Romania/poster/Photocatalytic removal of ibuprofen from water using sol-gel prepared TiO₂ thin films/2019;

30. Materials, Methods and Technologies-Twenty second International Conference; Burgas, Bulgaria/poster/Synthesis and characterization of sol-gel TiO₂-based materials using tetraethoxysilane (TEOS) and/or methyltriethoxysilane (MTES) as coupling agents/2020;

31. International Chemical Engineering and Material Symposium, SICHEM; Bucuresti, Romania/poster/Sol-gel thin films prepared with silane precursors/2020;

32. 16^th International Symposium “Priorities of Chemistry for a Sustainable Development” PRIOCHEM, Bucharest, Romania/poster/Stabilization of Photosensitive Curcumin by Microencapsulation/2020;

33. 3^rd International Conference on Emerging Technologies in Materials Engineering–EmergeMAT, Bucuresti, Romania/poster/Synthesis and characterization of “N-N” heterojunction based on TiO₂-ZnO materials/2020;

34. 26^rd International Symposium on Analytical and Environmental Problems, Szeged, Hungary/poster/OBTAINING TiO₂ WITH NANOPOROUS STRUCTURE BY CHEMICAL CORROSION AND THERMAL OXIDATION OF Ti FOILS/2020

35. International Congress of „Apollonia” University from Ia?i, editia XXXI; Iasi, Romania/prezentare orala/ Silica-gentamicin nanohybrids obtained by microwave synthesis/2021;

36. International Congress of „Apollonia” University from Ia?i, editia XXXI; Iasi, Romania/prezentare orala/Eco-friendly biopolymer membrane for zinc ions removal from a simulated wastewater/2021.

37. 4^th International EPNOE Junior Scientist Meeting/ Kortrijk, Belgia/on-line/comunicare orala/Cyclodextrin involvement in the ring-opening polymerization of D,L-lactide monitored by MALDI mass spectrometry/2021

38. 4^th International EPNOE Junior Scientist Meeting; Kortrijk, Belgia/ on-line/comunicare orala/ Cyclodextrin-polyurethane degradable hydrogels2021

39. prezentare cerere de brevet la salon inventie (medalie de aur)INVENTCOR, Deva/poster/ DEVELOPMENT OF „N-P” HETEROJUNCTIONS BASED ON N-TYPE TIO₂ AND P-TYPE CuMnO₂, INTEGRATED IN SENSITIVE MODULES/2020

PC5:

1.            Simpozionul International “Prioritatile Chimiei pentru o dezvoltare durabila –PRIOCHEM XIV, Bucuresti 10-12 octobrie 2018, English ed., On-line ISSN 2601 – 4203, ISSSN-L 2601 – 4181, Doina Dimonie, Ionut-Cristian Radu, CatalinZaharia, Celina Maria Damian, Rusandica Stoica, Beatrice Girbaciu, Sorina Ieftimie, Mariana Cristea, Madalina Grigore, “The influence of the stereoisomery on the properties of some modified renewable polymers designed for durable 3D printing application”,  poster

2.            Simpozionul International “Prioritatile Chimiei pentru o dezvoltare durabila –PRIOCHEM XIV, Bucuresti 10-12 octobrie 2018, English ed., On-line ISSN 2601 – 4203, ISSSN-L 2601 – 4181 Doina Dimonie, Rusandica Stoica, Beatrice Girbaciu, Manuela Iftimie, Mariana Cristea, Madalina Grigore, “DSC Study of thermal behavior of some renewable polymers modified for usingas 3D printed durable applications”, poster

3.            “Prioritatile Chimiei pentru o dezvoltare durabila –PRIOCHEM XIV, Bucuresti 10-12 octobrie 2018, English ed., On-line ISSN 2601 – 4203, ISSSN-L 2601 – 4181 Sorina Iftimie, Stefan Antohe, Anca Dumitru, Madalina Grigore, Doina Dimonie, Study of morphology of somew renewable modified polymers as method to split the nucleation and the reinforcement effects”, poster

4.            5th International Congress on Chemistry for

Cultural Heritage, Bucharest,Romania, 3-7.07.2018, 2018 (comunicare)Mariana Cristea, Daniela Ionita; Why polymeric materials (“plastics”) are not reliable for longterm artworks? Prezentare orala

5. Annual Scientific Conference of the Faculty of Physics of the University of Bucharest, tudy of the physical properties of P3HT:PCBM:SnO2thin films based photovoltaic structures Calugar Alina, Filipescu Mihaela, Iftimie Sorina, Radu Adrian, Antohe Stefan, Antohe Vlad, Dinescu Maria , Magurele Romania, 21.06.2019 Prezentare orala

6.            11th International Conference on Materials Science & Engineering (BRAMAT 2019), 13 – 16 martie 2019, Universitatea Transilvania, Bra?ov Alina Ioni??, Andra Sîrmon, Beatrice Gîrbaciu, Sorina Iftimie, Doina Dimonie, ”Study of the melt rheological properties as possibility to control the 3D printing behavior of new sustainable polymeric materials”, orala

7.            19th International Balkan Workshop on Applied Physics and Materials Science (IBWAP 2019), 16 – 19 iulie 2019, Constan?a Andra Sîrmon, Alina Ioni??, Beatrice Gîrbaciu, Sorina Iftimie, Claudiu Locovei, Anca Dumitru, ?tefan Antohe, Aurelian Stamata, Doina Dimonie, ”Engineering of achieving on a new laboratory line of polymer filaments that comply with 3D/ 4D print requirements”, poster

8.            21st International Conference on Chemistry and Chemical Engineering (RICCCE 21), 4 – 7 septembrie 2019, Constan?a – Mamaia Alina Ioni??, Andra Sîrmon, Beatrice Gîrbaciu, C?t?lin Zaharia, Ionu?-Cristian Radu, Doina Dimonie, ”The melt flow properties of new renewable compounds designed for 3D printing”, poster

9.            Priorit??ile Chimiei pentru o Dezvoltare Durabil? – PRIOCHEM XV 2019, 30 octombrie – 1 noiembrie 2019, Bucure?ti Doina Dimonie, Beatrice Gîrbaciu, ”The shape memory polymeric materials and the additive manufacturing technology as promotor of the future smart society”, poster

10.         Priorit??ile Chimiei pentru o Dezvoltare Durabil? – PRIOCHEM XV 2019, 30 octombrie – 1 noiembrie 2019, Bucure?ti, Beatrice Gîrbaciu, Mariana Cristea, Daniela Ioni??, Silvia Mathe, Doina Dimonie, ”Physical modification of PLA for increasing its durability (polarizing light microscopy study), poster

11.         Priorit??ile Chimiei pentru o Dezvoltare Durabil? – PRIOCHEM XV 2019, 30 octombrie – 1 noiembrie 2019, Bucure?ti Silvia Mathe, Beatrice Gîrbaciu, Doina Dimonie, ”DSC study of cold crystallization process characterizing the stereocomplexed PLA compounds”, poster

12.         Priorit??ile Chimiei pentru o Dezvoltare Durabil? – PRIOCHEM XV 2019, 30 octombrie – 1 noiembrie 2019, Bucure?ti Doina DIMONIE, Ionut-Cristian RADU, George VLASCEANU, Catalin ZAHARIA, Nicoleta DRAGOMIR, Ovidiu DIMA, Sorina IFTIMIE, Estimating the 3D printing defects by micro-computed tomography”, poster

13.A XXVII-a Sesiune de comunicari stiintifice a Institutului de Chimie Macromoleculara „PetruPoni”, Iasi, 2-4.10.2019, Daniela Ionita, Mariana Cristea, Constantin Gaina; Evaluarea comportarii viscoelastice a PU utilizand echivalenta timp-temperatura; comunicare orala;

14. A XXVII-a Sesiune de comunicari stiintifice a Institutului de Chimie Macromoleculara „PetruPoni”, Iasi, 2-4.10.2019, Daniela Ionita, Mihaela Silion, Doina Dimonie, Mariana Cristea; DART-MS: spectrometria de masa cu analiza directa in timp real. Cazul poli(acidului lactic); poste);

15.         NeXT CHEM, ICECHIM Bucuresti, 6 iunie 2019 Andra Sirmon, Alina Ionita, Beatrice Garbaciu, Viorel Grigorescu, Doina Dimonie, sustainable renewable polymeric materials compatible with 3D printing, prezentare orala

16.         NeXT CHEM,  ICECHIM Bucuresti, 9-10 iunie 2020, Beatrice Gîrbaciu,Maria Cristea, Silvia Mathe, Doina Dimonie, Study on increasing durability of pla designed for 3d printing through nucleation with sulphonic ester derivative as nucleating agent, , prezentare orala

17. International Conference on Chemical Engineering, Innovative Materials and Processes for a Sustainable Development – ICCE 2020 The issue of single-value glass transition temperature of polymers as it is determined from DMA., Cristea Mariana, Ionita Daniela, Dimonie Doina, 28.11-30.11.2020, Iasi Romania,  Prezentare Orala 

18. Sesiunea de Comunicari Stiintifice a Tinerilor Cercetatori (ICMPP – Poarta deschisa spre viitor), Editia I, Institutul de Chimie Macromoleculara „Petru Poni Crystallization and thermo-mechanical behavior of poly(lactic acid): effect of additives, Ionita Daniela, Iftime Manuela, Dimonie Doina, Cristea Mariana, 19.11.2020 Iasi Romania

19. Priorit??ile Chimiei pentru o Dezvoltare Durabil? – PRIOCHEM XVI 2020, Structural Parameters Influencing the Shape Memory of New PolymericMaterials Designed for 4D Printing,  Dragomir Nicoleta, Gabor Raluca, Dimonie Doina, Dima Ovidiu, 28.10-30.10.2020, Bucuresti, Romania, Prezentare orala

Patent applications

PC1

1Process for obtaining titanium nitride via inorganic-organic polymeric nanocomposites”, ICECHIM, Radu Anita-Laura, Sârbu Andrei, Dumitru Aurelia-Anca, Ifteme Sorina, Carmen Laz?u, Orha Corina Ileana, Tan?a Verona Iordache, Teodor Sandu, Miron Andreea, Stelu?a Apostol, “OSIM A00166/15.03.2019

• ·2. « New hybrid materials based on natural zeolite functionalized with "black" titanium dioxide, obtained by the solid-solid method », INCEMC Lazau Carmen, Orha Corina, Bandas Cornelia nr. OSIM  A/00332/2019

PC2.

1. Process for obtaining antimicrobial coatings and protections against chemical pollutants, intended for the conservation of heritage objects / OSIM/ A 2021-00166/ 09.04.2021

PC3

1. Thermoplastic polyurethanes with biodegradable structural segments and production process (ICMM), OSIM  A / 00083 / 18.02.2020

2. “Compositions with increased flexibility based on polyhydroxyalkanoates and obtaining process” (ICECHIM), OSIM A / 00675 / 27.10.2020.

PC4

Sol-gel nanohybrid bicomponent photocatalytic compositions and process for obtaining these materials, ICECHIM V. Purcar, V. R?di?oiu, A. R?di?oiu, F. M. Raduly, R. Manea, G. C. Ispas, L. E. Wagner,  OSIM A/00645/14.10.2020.

PC5

„Composition for increasing the flexibility of polylactic acid by stereocomplexing for use in 3D printing, Doina Dimonie si col. ” – A/00851 / 22.12.2020

• http://uefiscdi.gov.ro/
• http://www.icechim.ro/
• http://www.icechim-pd.ro/ro/pol_hitech/polimeri_hitech.html

FINAL REPORT

The realization of the complex project aimed for each organization to strengthen its relations with the consortium partners in order to carry out other projects in partnership, in the fields of intelligent specialization, especially in the field of materials, based on knowledge, human resources and equipment. The realization of the project also aimed at institutional consolidation based on the transfer of knowledge within the consortium.

The activities carried out were:

Component project no.1: Innovative process for obtaining titanium nitride ceramics by means of composite polymeric hybrids for biomedical applications BIOTIN

The proposed project aimed at obtaining TiN ceramic powder for use in biomedical applications such as orthopedic implant coatings or various prostheses due to its tribological properties, biocompatibility and affordability.

All the activities provided in the work plan for the mentioned period have been fulfilled in proportion of 100% and many indicators have been exceeded.

Thus, in the first 2 stages of the project we investigated the synthesis and characterization of mesoporous titanium dioxide by the sol-gel and hydrothermal methods in the microwave field. Different types of surfactants were used in the syntheses: Pluronic P123, Polyvinylpyrrolodone (PVP), Hexadecylamine (HDA). The laboratory technology for the synthesis of mesoporous titanium dioxide was developed by the microthermal method in the microwave field. (Partner P2- INCMC- Timisoara). It was studied the obtaining of inorganic-organic nanocomposites based on mesoporous TiO2 and polyacrylonitrile, polyvinyl acetate or polystyrene, by host-guest polymerization. The laboratory technology for obtaining TiO2-polyacrylonitrile hybrid polymeric nanocomposites was developed. (CO- ICECHIM). The composites were complexly characterized by structure, including by computed tomography (P3-UPB). Based on thermal analysis and XRD studies, the laboratory technology for transforming polymeric nanocomposites into graphite-TiO2 nanocomposites was established by carbonizing the polymer in the nanopores of the inorganic host (P5-ICMM-Petru Poni Iasi). The studies of thermal analysis, XRD and FTIR allowed the elaboration of the laboratory technology for obtaining titanium nitride (P4- University of Bucharest). Cytotoxicity tests by the methodology recommended by the ISO 10993 standard - extraction method and contact method, allowed the inclusion of samples received from partners in the category of moderately toxic products (P1-ICCF).

In the 3rd stage of the project, the technologies for the production of TiN via polymeric nanocomposites by the carbothermal method were demonstrated. For this purpose, the technologies for the production of mesoporous TiO2 by the microwave-assisted hydrothermal method, the technology for the production of organic inorganic polymeric composites, based on TiO2 and Polyacrylonitrile, by ultrasonic polymerization and the carbonization technology of the carbon-chain polymer from mesoporous pores were demonstrated. For the demonstration of technologies for the production of TiN via polymeric nanocomposites by the carbothermal method, polymeric nanocomposites based on 3 different types of porous titania were used, other than those used in the first stages. The production technology of TiN via polymeric nanocomposites by the carbothermal method was demonstrated for two types of TiO2 matrix with 50% content: MZ2 (sol-gel-surfactant-Pluronic method) and MZ10 (sol-gel-surfactant method with PVP).

In the 4th stage: The synthesis methodology and the characteristics of the porous inorganic TiO2 structure produced by the optimal process were validated, the technology of making Titania-PAN composites and the technologies of polymerization of the polymer and preparation of TiN were optimized and it was shown that the new material it is not carcinogenic.

The main achievements are: 4 demonstrated and optimized laboratory technologies, dissemination through participation in national / international conferences (29 communications instead of 6), 5 ISI articles (instead of 3), all published, 2 national patent applications instead of 1, 6 research jobs for young researchers.

Component Project no.2: “Nanostructured hybrid materials obtained by“ eco-fiendly ”methods for surface protection against damage caused by microorganisms and pollutants” – MAHIN

Component project no. 2 aimed to create intelligent materials for coatings with advanced protection properties against the development of biofilms and deposits on stone, paper and metal surfaces. For the reported period all activities and indicators provided in Working plan were carried out in proportion of at least 100%. There were no differences between the planned activities and those carried out.

In the first stage of the project, preliminary experimental research was performed for the synthesis of metal nanoparticles (Cu, Ag) and metal oxides (ZnO) with antibacterial properties by hydrothermal methods (CO-ICECHIM). In parallel, preliminary experimental research was conducted for the synthesis of metal nanoparticles (Cu, Ag) and metal oxides (ZnO) with antibacterial properties by solvothermal methods (P4-UB). Then, we proceeded to the characterization of metal nanoparticles and metal oxides obtained by morpho-structural methods: FT-IR, RAMAN (P3-UPB). (P5-ICMPP) performed the characterization of metal nanoparticles and metal oxides obtained by morpho-structural methods: SEM, TEM. At (P2-INCEMC) the characterization of metal nanoparticles and metal oxides obtained by morpho-structural methods was performed: XRD. Finally, the antibacterial properties of the obtained nanoparticles (P1-ICCF) were tested.

The second stage of the project began with the obtaining of plant extracts for the "eco-friendly" synthesis of metal particles (P1-ICCF). Using plant extracts, we proceeded to obtain metal nanoparticles (Ag) with superior antibacterial properties by "eco-friendly" methods - bioextract-assisted method (CO-ICECHIM). In parallel, we obtained metal nanoparticles (Cu) with superior antibacterial properties by "eco-friendly" methods - bioextract-assisted method (P4-UB). Next, we proceeded to obtain metal oxide nanoparticles (ZnO, CuO) with superior antibacterial properties by "eco-friendly" methods (in supercritical and plant extracts) (CO-ICECHIM) and to obtain metal oxide nanoparticles (ZnO, CuO) with superior antibacterial properties by "eco-friendly" methods (in supercritical and with plant extracts) (P4-UB). Following the obtained results, the parameters for obtaining metal nanoparticles and metal oxides (ZnO, CuO) were optimized by the method of designing experiments (Design of Experiment (DoE) (P4-UB). Following this activity, the characterization of nanoparticles (Cu, Ag, ZnO, CuO) obtained by optimized methods was performed: FT-IR, UV-VIS (P3-UPB).

In parallel, the characterization of nanoparticles (Cu, Ag, ZnO, CuO) obtained by optimized methods was performed: XRD, TEM (P5-ICMPP). (P2-INCEMC) performed the characterization of nanoparticles (Cu, Ag, ZnO, CuO) obtained by optimized methods: XRD, SEM. Following the results of the analyzes performed, we proceeded to obtain nanostructured hybrid materials based on combinations of metal and oxide nanoparticles in filmogenic silane matrices (CO-ICECHIM) and to obtain nanostructured hybrid materials based on combinations of metal and oxide nanoparticles in film-forming polysiloxanes (P4-UB). Then, the characterization of the nanostructured hybrid materials obtained by the methods FT-IR, RAMAN (P3-UPB) was performed. In parallel, the characterization of the nanostructured hybrid materials obtained by the AFM method (P5-ICMPP) and the characterization of the nanostructured hybrid materials obtained by the SEM-EDX method (P2-INCEMC) were performed. At the end of the stage, the results were disseminated (CO-ICECHIM, P1-ICCF, P2-INCEMC, P3-UPB, P4-UB, P5-ICMPP).

In the third stage of the project, the optimized synthesis of nanostructured hybrid materials with Cu nanoparticles and Ag nanoparticles (CO-ICECHIM) was achieved. Also, the activity of the optimized synthesis of nanostructured hybrid materials with ZnO nanoparticles (part I) (CO-ICECHIM) was performed, as well as the optimized synthesis of nanostructured hybrid materials with ZnO nanoparticles by the LbL method (part I) (P4-UB ). The optimized nanostructured hybrid materials, obtained in Part I, were characterized by FT-IR, RAMAN (P3-UPB), AFM (P5-ICMPP) and SEM-EDX (P2-INCEMC). The functionality of coatings made of hybrid nanostructured materials for the protection of lithic, metallic and paper materials was tested against chemical pollutants (SO2, CO2, NO2) (P4-UB) and against bacteriological attacks (P1-ICCF), part I. At the end of the stage the dissemination of the results was performed (CO-ICECHIM, P1-ICCF, P2-INCEMC, P3-UPB, P4-UB, P5-ICMPP).

In the fourth stage of the project we continued with the optimized synthesis of nanostructured hybrid materials with ZnO nanoparticles (part II) (CO-ICECHIM), as well as the optimized synthesis of nanostructured hybrid materials with ZnO nanoparticles by the LbL method (part II) (P4 -UB). Coatings made using optimized nanostructured hybrid materials were characterized by FT-IR, RAMAN (P3-UPB), AFM (P5-ICMPP) and SEM-EDX (P2-INCEMC). The functionality of coatings made of nanostructured hybrid materials for the protection of lithic, metallic and paper materials continued to be tested against chemical pollutants (SO2, CO2, NO2) (P4-UB) and against bacteriological attacks (P1-ICCF), part a II. At the end of the stage, the results were disseminated (CO-ICECHIM, P1-ICCF, P2-INCEMC, P3-UPB, P4-UB, P5-ICMPP). The main achievements of the development of the component project no.2 are: 6 newly created jobs in research; 2 laboratory technologies; 9 experimental models; 5 experimental procedures; 1 optimization study; 15 sets of analysis bulletins; 2 specific testing protocols; 4 test reports; 5 published ISI scientific articles; 20 scientific communications; 1 organized workshop; 1 patent application at national level.

Project Component no.3: Biomaterials from aliphatic polyesters and micro and nano-cellulose modifiers for short-live or disposable products- ESTERPACK

PC3 (ESTERPACK) aimed at making biodegradable materials based on aliphatic polyesters with balanced mechanical and thermal properties, with good ductility and processing behavior. They are intended for obtaining short-live or disposable packaging that accumulates in large quantities after use and that are difficult to recover, so that, the use of a biodegradable material would solve the waste problem. For this purpose, medium chain length polyhydroxyalkanoates (mPHA) with C8 or C9 major fraction were biosynthesized at ICCF and at the same time at ICMM several types of polyurethanes with biodegradable sequences (PU) were synthesized. The assortments of mPHA with controlled properties were made by testing, selecting and preserving a microorganism with high bioproductive capacity and by regulating the conditions of biosynthesis and post-biosynthesis processing. Laboratory tests have established an optimal procedure for the isolation and realization of optimized variants of mPHA bioelastomer. Also, an optimal assortment of PU bioelastomer was selected by synthesis and characterization of several sorts of polyurethanes based on poly (caprolactone) diol, poly (butylene adipate) / poly (ethylene glycol), isophorone diisocyanate and chain lengtheners in different molar ratios. MRI, FTIR, AFM and SEM / EDX analyzes allowed both the confirmation of the structure and the morphological investigation and the selection of the PU bioelastomer assortments.

PU and mPHA type bioelastomers were used to make bioalloys based on polyhydroxybutyrate (PHB, commercial product) using several methods, mass ratios and working conditions. Following the analysis of the mechanical, thermal, morphological and structural properties of PHB / mPHA type alloys using the techniques AFM, SEM, contact angle, DSC, TGA, DMA and tensile tests, the experimental model and the technology for obtaining these bioalloys were elaborated. The results of the analyzes highlighted the morphology of these bioalloys and the improvement of thermal and mechanical properties, especially the significant increase in ductility compared to PHB. By modifying the PHB / mPHA bioalloys with nanocellulose (NC), a compatibility between phases was obtained, as well as superior mechanical and thermal properties. The experimental model of PHB / mPHA / NC nanocomposite was developed. Several methods and conditions for obtaining PHB bioalloys and selected assortments of PU bioelastomers were also tested. Following the analysis of the processing behavior, of the rheological, thermal and mechanical properties, the technology for obtaining biodegradable PU type polyurethanes (which was the subject of a patent application registered at OSIM) and the composition of the PHB / PU bioalloy were optimized. PHB / PU / NC biocomposites were made which were characterized by SEM, AFM, optical microscopy, contact angle, DSC, TGA and DMA to establish the composition and conditions for obtaining biocomposites. The optimized technology for obtaining PHB / PU / NC biocomposites was the basis for the elaboration of a patent. Foils from both types of biocomposites (PHB / mPHA / NC and PHB / PU / NC) were obtained using extrusion-blowing technology, specific to obtaining packaging. The tests performed allowed the optimization of the working conditions for blowing a continuous tube. The characterization by micro-CT, AFM, TGA-DSC-DMA and tensile tests allowed the evaluation of the performances of the biocomposites realized on various processing installations.

The biodegradability of PHB / mPHA / NC nanocomposites was evaluated by soil degradation and characterization of samples taken every month for 4 months, the results indicating an increase in degradability for bionanocomposites compared to PHB. However, the stability of PHB / PU / NC biocomposites in aqueous medium with different pH, with or without oxidizing agent, was better than the PHB reference. All the activities expected within PC3 were achieved and the objectives met in proportion of over 100%.

The main results: 2 newly created jobs (ICECHIM and ICCF), 2 patent applications registered at OSIM, 4 ISI articles published, one article accepted and another sent to ISI journals and 15 presentations at international conferences, 3 new products (mPHA with controlled composition, PU with biodegradable sequences and nanocomposite), 4 new technologies (synthesis of mPHA and PU, obtaining bioalloy and nanocomposite).

Component Project no. 4: Innovative hybrid materials with photocatalytic properties-  FOTOMAH

PC4 (FOTOMAH) aimed at designing and making new hybrid materials with photocatalytic properties to obtain self-cleaning coatings in natural or artificial light and to find the relationship between the composition and structure of the materials made. All objectives have been met and exceeded:

In stage I / 2018, preliminary studies and experiments were performed on obtaining TiO2 structures by the hydrothermal method (P2-INCEMC), the sol-gel process (IC-ICECHIM) and the microwave-assisted hydrothermal process (P4-UB). We obtained 10 types of TiO2 nanocrystals (2 undoped, 4 doped with Ag and 4 doped with Fe) synthesized by the hydrothermal method (P2-INCEMC). The synthesis parameters (photocatalyst concentration, reaction temperature, type of silane agent) were identified for the production of materials with the addition of undoped and dye-sensitized TiO2 (iron phthalocyanine) by the sol-gel process (IC-ICECHIM). For the synthesis of TiO2 through the microwave-assisted hydrothermal process, the synthesis parameters (applied power, heating time, temperature, pressure, pH of the solution) (P4-UB) were identified. Tests were performed to observe the compatibility of photocatalytic structures with the dye material (P5-ICMMPP), the photocatalytic activity of compounds with phthalocyanine-azomethine structure (P3-UPB) and the antibacterial effect of materials with photocatalytic structures (P1-ICCF). Studies have confirmed that TiO2 sensitized with azomethine-phthalocyanine dyes has a photocatalytic degradation effect on organic dyes (P3-UPB). A study was developed on the selection and adaptation of a method for evaluating the antibacterial activity of thin film products obtained from TiO2 materials (P1-ICCF).

In stage II / 2019, oxide-type structures were made by 4 methodologies: hydrothermal method (P2-INCEMC), sol-gel process (IC-ICECHIM), microwave-assisted hydrothermal process (P4-UB) and recipes for obtaining paints (P3-UPB). 10 types of TiO2 nanocrystals were obtained (2 undoped, 4 doped with Ag and 4 doped with Fe (conc. 2% and 3%) (P2-INCEMC). 2 types of materials were synthesized and characterized. of TiO2 undoped and sensitized with dye (iron phthalocyanine), with different silane precursors.The materials were deposited on glass and plastic, making anti-reflective, hydrophobic and photocatalytic coatings (IC-ICECHIM, P5-ICMMPP). By microwave-assisted hydrothermal process, 5 types of samples of doped oxycatalytic photocatalytic material were made, which were deposited in the form of film on glass and quartz (P4-UB). Self-cleaning coatings based on TiO2-type photocatalysts sensitized with dyes with mixed azomethine-phthalocyanine chromophore were formulated.  2 paints (one for interior based on acrylic polymer and another for exterior based on acrylic-styrene polymer) (P3-UPB) were produced.. It was observed the antimicrobial effect of undoped and sensitized TiO2 dispersions dye, using 2 microbial strains (P1-ICCF).

In stage III / 2020, the optimization and evaluation of the sol-gel process (IC-ICECHIM) and of the microwave-assisted hydrothermal process (P4-UB) were performed to obtain TiO2 / dye photocatalytic materials. By optimizing the parameters for sol-gel synthesis, photocatalytic films of TiO2 / dye type were made on glass and plastic. (IC-ICECHIM). The contact angle, roughness and degradability of methylene blue dye (MB) were determined for polysiloxane-silica and polysiloxan-silica / TiO2 composite films doped or undoped with iron phthalocyanine, deposited on glass or plastic (IC-ICECHIM, P5 -ICMPP). Photocatalytic films of type TiO2 / dye were made on glass, plastic and quartz (P4-UB). TiO2 syntheses were performed with Ag or Fe, at the doping degrees of 2% and 3%, respectively, by the hydrothermal method, at the filling degree of 80% (P2-INCEMC). Laboratory recipes for obtaining paints with water-based self-cleaning properties have been optimized by adding in the composition wetting agents, dispersing agents and rheology modifiers and studying their influence on the final properties of the film, aiming to increase resistance at chalk, improving the resistance to dirt and adhesion and preserving the self-cleaning properties based on the photocatalytic effect of photosensitized TiO2 particles with organic dyes with phthalocyanine-azomethine chromophore (P3-UPB). The antibacterial effect was evaluated for 3 samples synthesized with silane precursors and using different powders of undoped TiO2, Ag-doped TiO2 or dye-sensitized TiO2 (iron phthalocyanine) against 2 bacterial strains. The results showed that the samples showed antimicrobial activity classified as "weak" or "moderate" (P1-ICCF)

In stage IV / 2021 it was demonstrated that oxide-doped photocatalytic materials, doped with dye can be obtained by the sol-gel process (IC-ICECHIM) and by the microwave-assisted hydrothermal process (P4-UB). The evaluation of the performance of SiO2-TiO2 / TiO2-dye photocatalytic films was performed in the photodegradation processes of MB. Polysiloxane-silica and polysiloxan-silica / TiO2 composite films doped or not doped with iron phthalocyanine, deposited on glass or plastic support (contact angle, AFM, R%) (IC-ICECHIM, P5-ICMPP) were characterized. UV-VIS spectrometry measurements were performed for crystalline structures of undoped and doped TiO2 with Ag or Fe ions obtained by the hydrothermal method (P2-INCEMC). Testing the use of other binders in obtaining paints with self-cleaning properties based on TiO2 sensitized with phthalocyanine-azomethine dyes showed that there is a possibility to expand the range of products by using silicate resins. (P3-UPB). Tests were performed to elucidate the antibacterial effect for 2 samples synthesized with silane precursors and using dye-sensitized TiO2 powder (iron phthalocyanine) or ZnO, against 2 bacterial strains. The results showed that the samples show antimicrobial activity classified as "weak" on the strains tested under the conditions of the adapted diffusimetric method (P1-ICCF).

 All the planned activities (2018-2021) were achieved and the objectives were met in a proportion of over 100%.

The main results are: 2 batches of materials, 4 laboratory technologies (hydrothermal method, sol-gel process, microwave assisted hydrothermal process, recipes for obtaining paints), dissemination by participation in national / international conferences (39 papers of which 1 presentation patent application at invention salon), 12 articles published in ISI journals, 1 article accepted for publication in ISI journal, 3 proceeding papers published in Proceedings (MDPI), 1 national patent application, 2 offers of research services, 2 working visits , 2 newly hired training internships, 2 research jobs for young researchers.

Component Project no. 5: New durable materials based on renewable polymers for 3D printing 3D LONG LIFE

The purpose of the component project 5 was to create PLA-based materials with mechanical properties specific to durable applications and with melt rheological properties that make possible to process the finished product by 3D printing. Durability is the property of polymeric materials to withstand, during their lifetime, the action of environmental factors without endangering proper functioning. In the selection of the type of polymer, the desideratum of the actuality related to the new economy of plastics  by fossil carbon replacement with renewable carbon were considered, ie the replacement in sustainable applications of conventional polymers with renewable ones considering the modern techniques for processing in finished product. That is why it was decided to obtain the new material by modifying the PLA. The objectives of the project and the results obtained in the period 2018 – april 2021 are: Objective 1: Design, realization and characterization of new durable materials based on renewable polymers for 3D printing. The design of the new polymeric materials supposes the simultaneous consideration of both the requirements of the targeted applications and those specific to the techniques of transformation into a finished product. For this purpose, those innovative methods were selected that allow the control of the durability properties based on the rigidity balance - absorption capacity of the breaking energy and of the thermal behavior. Controlled crystallization methods were considered that allow controlling the morphological structure by generating variable crystalline / amorphous ratios so that the energy absorbed by the material before breaking and its thermal stability have predetermined values, specific to sustainable applications. Through the collaboration of partners in 2018, experimental models were developed for the development and characterization of new renewable materials for durable applications that can be processed into a finished product by 3D printing. Objective 2: Development of new sustainable materials based on renewable polymers compatible with 3D printing. Complex material characterizations. In 2018, new compounds were made by modifying PLA with nucleation-reinforcement additives, materials that were characterized by the involvement of all partners. The analysis of the obtained results, their interpretation and the decisions regarding the continuation of the works were the result of the conclusion of all the partners. The obtained results showed that the approached direction is feasible, following that in the next stage, after the adequate study of the new materials for 3D printing and the selection of the variants of interest, to optimize the mechanical and thermal behavior according to the interests of sustainable applications and 3D processing. Based on the obtained results, it was appreciated that the result indicators programmed for stage 1 were fully achieved. In 2019, stereocomplexation works for polylactic acid were performed, in different dextro-levo compositional variants which, depending on the intensity of specific attractions +) / (-), generates nucleation centers that lead to durable materials. Also in 2019, the compounds made by stereocomplexation were characterized and subjected to preliminary selection processes. From the selected variants, filaments were formed, which were later used for 3D printing and by modern methods, 3D printing defects were identified. All the studies performed showed that PLA stereocomplexation was successful, which generated functional differences from the base polymer. The primary material selections led to variants that can be transformed into 3D printable filament, the obtained products having morphologies without notable defects. Based on the obtained results, it was appreciated that the result indicators scheduled for stage 2 were fully achieved. Objective 3: Compatibility of new materials with 3D printing. The work carried out in 2020 had as main purpose the material corrections based on the results obtained from the characterization of the functional properties and for 3D printing. For this purpose, several methods have been used to accentuate the stereocomplexation process, the most efficient of which will be the subject of a patent application. The complex characterizations of the material performed with the help of all partners demonstrated that the control of the stereocomplexation process was successful. The process was highlighted both by structural methods and by the values ??of the functional properties. The compositional variants in which morphological changes were generated by the control of the stereocomplexation process were processed with good results in filaments. These filaments have been transformed into finished products by 3D printing. The selected conditions have generated the best adhesion between the overlapping layer deposited by printing.

In order to increase the durability of PLA, in 2021, it was finalized the testing of the behaviour in the 3D printing, with the identification of optimal printing conditions, flow correction using printing conditions, final correction of modification formulations, finalization of the control of adhesion between layers of material deposited by printing, finalizing the characterization of new materials, including by the determination of the final functional properties of the material. Laboratory technology has been developed and intellectual property rights have been protected

All the planned activities were carried out and its objectives were met in proportion of over 100%.

The main results are: 5 ISI articles (4 published, 1 under evaluation), 19 international conferences, 1 patent application, 2 new products, two places new work by hiring at ICECHIM 2 young ACS, a doctoral thesis being developed with a topic related to the subject of the contract under the leadership of the person in charge of this contract, connection with a company in order to apply the new technology.