POLYMER MATERIALS: METHODS OF PRODUCTION, INVESTIGATION OF PROPERTIES, APPLICATION:

POLYMER MATERIALS: METHODS OF PRODUCTION, INVESTIGATION OF PROPERTIES, APPLICATION:

- Development of photo-, electron- and X-ray resists for micro- and nanolithography, compositions for producing films with controllable transparency for optoelectronics and fluorescent materials;

- Producing polymer basis for resists with controlled composition and molecular-weight characteristics;

- Development of adhesive compositions for metal-polymer systems;

- Development of highly effective flocculants for water treatment processes, for clarification of potable water, recirculated water, effluents and for use in pulp and paper industry;

- Development of polymer compositions for restoration and preservation of objects, biocidal compositions with antiseptic action, heat- and sound-proof fire-resistant materials, and also additives to lubricants;

- Development of biocompatible wound-healing materials, new medicinal forms and studying their bioactivity and adaptogenic properties;

- Development of methods for increasing plasma and chemical stability of photoresist materials and dry-develoment resists;

- Development of a method for planarization of blanks for integrated circuits and incoming inspection of positive photoresists.

Main results: 

- Positive radiation resists for microlithography with high resolution (less than 0.1 microns) have been developed. The resists are on a par with the best in the world: metal impurities content is less than 0.0005 %, resist film contrast is 3-11, sensitivity toe-beam (20 keV) is 20-0.7 microcoulombs/ с m2, to X-ray radiation (4.4 nanometers) 180-34 mJ/ с m2, to EUV radiation (13.4 nanometers) 3-1 mJ/ с m2, and to UV radiation (254 nanometers) 12 mJ/ с m2.
- Polymer films with dispersed liquid crystal have been developed with turn-off time and voltage <1 ms and 2 V/micron, respectively.
- Original state of the art techniques have been developed for the synthesis of narrow-dispersion homo- and copolymers (including block-copolymers) by controlled radical polymerization methods in the conditions of radical initiation on a nearly industrial scale, and also of chemically-enhanced resists.
- Unique polymer compositions have been developed for restoration and preservation of various objects. Such compositions are transparent, colourless, chemically inert, their properties remain stable for a long period of time. They can be removed from the surface of the objects without damaging them.
- Fire-resistant polyurethane foam has been developed, possessing excellent thermo- and sound- insulation properties (winning the bronze medal of the "Great Rivers" forum in Nizhni Novgorod, 2007). Sandwich panels with a thermal insulation layer produced from this material make it possible to reduce the duration of construction work when building 1-2 storey houses to 2 months and to extend the life of such structures to 50 years.
- Non-toxic (hazard class 4) flocculant «Floc» on polymer basis on par with world’s best has been developed. The flocculant is commercially available in loose commodity form, it is effective at low dosages (from 1 to 0,1 g/m3), does not require any changes in the existing scheme of water purification and ensures stability of properties of working solutions. It is less expensive in comparison with such flocculants as «Praestol» and «Polyacrylamide». Application of «Floc» in pulp-and-paper manufacture results in an increased efficiency of paper pulp use, improved quality of paper and cleaner aqueous effluents. Trial tests of the flocculant have been carried out in a number of companies.
- Conditions for chitosan modification have been developed. Modified chitosan, when used in water processing, carries out a threefold function of flocculant, coagulant and sorbent providing the following parameters of water color index, oxygen demand and turbidity at the levels ~20, ~7 and 0,58 units, respectively, and also a decrease in the concentration of Fe, Ca and Mg ions to the level of maximum concentration limit. The efficiency of clarification of "slurry" of various effluents is 14-26 units; the degree of clearing of petroleum - containing effluents reaches 99.8 %. The efficiency of the modified chitosan as a coagulant is 100 times higher than that of Al3+ compounds.
- Polymer biocides on the basis of zinc methacrylate–acetates and appropriate modifiers possessing antiseptic properties have been developed and are commercially available.
- Magnetic liquid on the basis of PES-2 with magnetite content of 14-15 mass percent and particle size of 20 nanometers has been developed, as well as highly effective additives to mineral oils on the basis of polymer oligoacrylates.
- Biocompatible wound-healing materials and new medicinal forms have been developed that help to maintain and correct homeostasis by increasing the activity of human organism’s protective systems.
- Films on the basis of chitosan and acrylonitrile copolymers possessing improved hygienic properties­ have been obtained.
- Photoresists and photolithographic processes with dry development of the image have been developed (all the stages of photolithography process take place in a vacuum or gas plasma).
- A method for planarization of blanks for integrated circuits with the use of plasma – chemical polymerization of monomers has been developed.
- Unique adhesive compositions have been developed for metal-polymer systems ensuring a strong bond between metals and various types of polymers.

Leading experts:

- Dmitry Fedorovich Grishin, С orresponding Member of the Russian Academy of Sciences, Professor, Director of UNN Research Institute for Chemistry;
- Yuri Denisovich Semchikov, D.Sc. (Chemistry), Professor, Head of Department;
- Larisa Aleksandrovna Smirnova, D.Sc. (Chemistry), Professor;
- Daniil Nikolaevich Yemelyanov, D.Sc. (Chemistry), Professor;
- Svetlana Aleksandrovna Bulgakova, D.Sc. (Chemistry), Senior Researcher, Head of Laboratory;
- Victor Alekseevich Dodonov, D.Sc. (Chemistry), Professor, Head of Department;
- Sergey Vasilevich Zelentsov, D.Sc. (Chemistry);
- Sergey Aleksandrovich Ryabov, Cand.Sc., (Chemistry), Associate Professor.

Main technological and research equipment:

- Liquid chromatograph "Prominence LC-20VP Shimadzu»;
- IR-Fourier spectrometer "Infralum FT-801";
- UV spectrophotometer "UV-1650 PC Shimadzu ";
- Spectrometer with monochromator М RD-204 (LOMO-fotonika);
- Microinterferometer MII-4;
- Test machine Zwick/Roell Z005;
- Rotational viscosimeters Reotest-1 and Reotest-2;
- Heppler consistometer;
- Heppler rheo-viscometer;
- Heppler viscosimeter;
- pendulum impact testing machines МК -2 and МК -5;
- bending test machine for plastic МР -1/ А S–102/METEFEM;
- Tensile test machine Zwick Z 005.

Main partners:

- Institute of Organometallic Chemistry of the Russian Academy of Sciences;
- Institute of Organoelement compounds of the Russian Academy of Sciences;
- Institute of Physics of Microstructures of the Russian Academy of Sciences;
- Open Company «Orgsteklo»;
- Factory «Nizhegorodteploizolyatsiya»;
- RFNC VNIIEF (Sarov);
- FSUE «V. А . Kargin Research Institute for Polymers»;
- Balakhna pulp-and-paper combine «Volga»;
- Saint-Petersburg enterprise «Vodokanal»;
- effluent treatment facilities of the Gorky and Pavlovo automobile factories;
- Nizhni Novgorod State University of Architecture and Civil Engineering.

Main customers:
- Research and Production Enterprise «Svetlana»;
- Municipal unitary enterprise "Vodokanal»;
- FSUE «Central Research Institute of Structural Materials «Prometey»»;
- Factory of automobile subassemblies;
- Research and Production Enterprise «Izurem»;
- Research and Production Enterprise «Sfera M».

Key projects (sources of financing):

- Grants of the Russian Foundation for Basic Research No. 07-03-12017ofi, 08-03-00100 а , 08-03-97048-r_povolzhie_ а , 08-03-97051-r_povolzhie_ а , 08-02-97031- r_povolzhie_ а .
- The analytical departmental target program of the Federal Agency for Education «Development of the scientific potential of higher education institutions». Activity 1, topics 1.31.05, 1.32.06 and Activity 2, projects 2.1.1 (147), 2.1.1 (1473).
- The grant of the program "Start" 2005.

Main publications: 

- Grishin D.F., Ilyichev I.S., Valetova N.B. Application of catalytical system NiBr2(PPh3)2/Zn for homo- and copolymerization of styrene and methyl methacrylate // Vysokomolekularnye Soedineniya. 2009. Vol.51 В . No 3. pp.522-529.
- Grishin I.D., Chizhevsky I.T., Grishin D.F. Effect of amines on the process of controlled synthesis of poly(methyl methacrylate)s in the presence of ruthenium carboranes // Doklady Akademii nauk. 2008. Vol.423. 3. pp. 340-344.
- Bulgakova S.A., Ivanov I.P., Lopatin A.Ya., Mazanova L.M. Research of the effect of structure and molecular-weight characteristics of methacrylic copolymers on their sensitivity to extreme UV irradiation // Poverkhnost. 2008. No. 6. pp. 90–94.
- Kazantseva I.A., Bulgakova S.A., Mashin A.I., Dzhons M.M., Tsepkov G.S., Korobkov A.V., Nezhdanov A.V. Electrooptical properties of polymer films with dispersed liquid crystal of submicron size // Zhidkie kristally i ikh prakticheskoe primenenie. 2008. Issue 2 (24). pp.35-45.
- Kopylova N.A., Semchikov Yu.D., Zaitsev S.D . Destruction of polymethacrylates obtained by the method of pseudo-living radical polymerization // Zhurnal Prikladnoi Khimii. 2008. Vol. 81. Issue 4. pp. 675-678.
- Emelyanov D.N., Volkova N.V., Torbin P.A., Smirnova O.V. Adhesion and impact resistance of firm fillers based on polyacrylate binder for restoration of stone objects // Mekhanika kompozitnykh materialov i konstruktsiy. 2008. Vol.14. No. 4. pp.525-531.
- Mochalova A.E., Smirnova L.A., Zaitsev S.D., Semchikov Yu.D., Zaiseva I.I. Hydrodynamical and molecular characteristics of grafted chitosan (co)polymers with acrylamide // Vysokomolekularnye Soedineniya. 2007. Vol.49B. No.10. Pp.1859-1863.
- Patent of the Russian Federation 2005133062/15. Wound-healing material. Malkov A.V., Molkov S.V., Afonin A.V., Mochalova A.E., Semchikov Yu.D., Smirnova L.A. Bulletin No.13 dated 10.05.2007.
- Zelentsov S.V., Zelentsova N.V., Kolesov A.N., Bogatyreva L.A., Mashtakov N.A. Methods of increasing plasma resistance of resist masks // Mikroelectronika. 2007. Vol.36. 1. Pp.45-56.
- Zelentsov S.V., Zelentsova N.V. Photoresists // In.: The Marcel Dekker Encyclopedia of Chemical Technology. New York , 2006. P. 2 111-2127.

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