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THE WORK GENERAL CHARACTERISTIC

Urgency of a theme of research. Production of various polymeric materials now grows: composites, mixes, membranes, sorbents, etc. For giving to a polymeric product of necessary properties (mechanical, thermal, electric, sorption, etc.) Into it enter particles organic and inorganic fillers.

It is thus important, that filler evenly or was in a special way distributed on volume basis a polymeric matrix and did not aggregate in particles of the big sizes. In turn, porous polymeric materials also are widely used in practice as membranes, sorbents, carriers of catalysts, etc. From presence of pores, their structures and distribution on volume basis essentially depend mechanical, sorption, diffusive and other properties of the polymeric sample. Therefore working out of the new experimental method, allowing to characterise a structure polymeric composite and sponges (especially in volume of the sample), is extremely actual problem.

For the characteristic of particles of filler or pores in a polymeric material there is a set of tool methods, but each of them has certain lacks. The main lack, for example, microscopic methods is difficulty of the analysis of particles of filler or pores in volume of the sample. Carrying out skol from the sample for microphoto reception, we inevitably distort it and we subject destructions. The yielded lack the spectral technique (approach) offered by us based on use optical (IK, visible and UF ranges) a range of lengths of waves for the characteristic of disperse particles (a pore, a filler particle) in a polymeric matrix is deprived. It is known, that at radiation passage through a sample easing of its intensity occurs at the expense of absorption and light scattering. Unlike other existing methods of the analysis of dispersing ("muddy") environments (electronic microscopy, malouglovoe x-ray dispersion, etc.) The spectroscopic way differs availability, simplicity, efficiency, is non-destructive and opens additional possibilities in the analysis of dispersing particles.

The work purpose consists in working out of a spectral technique for the characteristic of structure of a wide range of polymeric disperse systems.

Research problems are:

• research of influence of concentration and the size of disperse particles (a pore and a filler particle) on dispersion in all optical range (UF, near, centre and distant IK ranges) lengths of waves of a spectrum;

• an establishment of borders of use of a developed spectral technique for sizing of dispersing particles;

• working out within the limits of the spectroscopic approach of a technique for definition anizometrii and orientations anizometrichnyh dispersing particles in a polymeric matrix;

• method approbation on various porous polymeric materials, composites and aqueous slurries.

Scientific novelty of work consists:

• in working out new non-destructive spectroscopic the express - of a method for the characteristic of structure of polymeric disperse systems (pore size and filler particles, their distribution in the sizes, anizometrija and orientation anizometrichnyh pores and particles of filler in a polymeric matrix) in a wide range of lengths of waves (from 300 nanometers to 100 microns);

• in that the new method opens additional possibilities of the characteristic of a structure of disperse particles in a polymeric matrix, along with a method of dynamic light scattering (in case of aqueous slurries), and also microscopy and malouglovym x-ray dispersion (in case of polymeric composites and sponges).

The practical importance of work

The developed spectral technique (definition of the centre size, distribution in the sizes, anizometrii and orientations of disperse particles in a polymeric matrix) can be used for quality assurance of polymeric disperse systems (sponges, polymeric composites, polymeric mixes and aqueous slurries) during their reception and operation, and also at the decision of research problems.

On protection it is taken out:

• the developed spectral technique for definition of the centre size, distribution in the sizes, anizometrii and orientations of disperse particles in a polymeric matrix;

• the positioned dependences sorption and mechanical characteristics of sponge from its structure, and also mechanical and electric properties of polymeric composites on the basis of polypropylene (NN) filled carbon nanovoloknami (UNV) from orientation UNV in a polymeric matrix.

Approbation of results of work

The basic results of dissertational work were reported and discussed at 18 conferences (XVI-XXII Regional Karginsky readings (G-RISC International student conference “Science and Progress” DAAD (S.-Petersburg 2011, 2012, 2013), VIII St.-Petersburg conference of young scientists «Modern problems of polymer science» (S - Petersburg, 2012), IV scientific conference (with the international participation) АХО-4: “Achievements and problems” (Yerevan, 2014), IV international conference «Technical chemistry. From the theory to practice» (Perm, 2014), German-Russian Conference on Fundamentals and Applications of Nanoscience (Germany, Berlin, 2012), the international scientifically-practical conference «Polymer science: the contribution to innovative development of economy» (Tashkent, 2011), the Sixth All-Russia Karginsky conference «Polymers - 2014» (

Moscow, the Moscow State University, 2014), IV All-Russia conference with the international participation «Macromolecular nanoobekty and polymeric nanokompozity» (Istra, 2012), 8 St.-Petersburg conference of young scientists with the international participation «Modern problems of polymer science» (St.-Petersburg, 2012), 2 All-Russia scientific conference «Methods of research of composition and structure of functional materials» MISSFM - 2013 (Novosibirsk, 2013), the All-Russia scientific conference on

To fundamental questions of adsorption with participation of foreign scientists «Адсорбция-2013» (Tver, 2013), 6, 7, 8 All-Russia conference of young scientists, post-graduate students and students with the international participation in chemistry «Mendeleyev-2012, 2013, 2014» (St.-Petersburg, 2012,2013,2014), IX International conference of young scientists on chemistry «MENDELEEV 2015» (Saint Petersburg, 2015)), 2 symposiums (8th Intern. Symposium “Molecular order and mobility in polymer systems” (St. Petersburg, 2014), 19th European Symposium on Polymer Spectroscopy “ESOPS 19” (Czech Republic, Prague, 2013)) and at 1 congress (24 Congresses on spectroscopy (Moscow-Troitsk, 2010)).

Publications. Results of research are reflected in 34 publications (from them 6 articles in the reviewed scientific magazines included in list VAK), 2 patent applications and 1 manual.

The received experimental data are used by the author on chair of physical chemistry FGBOU IN «the Tver state university» (TvGU) at carrying out lecture and laboratory researches at the rate «Physical methods of research», and also at performance of course and degree works by students of chair.

Results of dissertational research have entered abreast nauchnoyoissledovatelskih works:

1) the Grant of Fund of assistance to development of small forms of the enterprises in scientifically technical sphere under the program «the Participant youth NauchnoYOinnovatsionnogo Competition» («U.M.N.I.K.») GK №3663ГУ1/2014 «Working out of a spectral technique of the characteristic of dispersing particles in a polymeric matrix»;

2) the Grant of Germano-Russian of an interdisciplinary centre of science (G - RISC) DAAD. Number of design С-2012а-2 «Spectroscopic Identification of the Sizes of Scattering Nanoparticles in Polymer Composites;

3) the Grant of Germano-Russian of an interdisciplinary centre of science (G - RISC) DAAD. Number of design C-2013b-3 «Application of Raman spectroscopy for characterisation of the polymeric nanocomposite, blend, porous material morphology»;

4) the Grant of Germano-Russian of an interdisciplinary centre of science (G - RISC) DAAD. Number of design C-2014b-7 «Application of near - far-IR and fluorescence spectroscopy for analysis of the polymeric nanocomposite and blend morphology»;

5) State task Minobrnauki the Russian Federation (a design part), the contract №4.1325.2014/К.

The personal contribution of the author. The author personally executes all experiments on research of samples of the polymeric disperse systems, resulted in the dissertation. Directed by a problem, the analysis and discussion of the received results, preparation of publications the author took over direct participation together with the supervisor of studies Pahomovym P. M and Hizhnjak S.D. - managing laboratory of spectroscopy TvGU. Microphotos of track membranes, the polymeric porous films, resulted in the dissertation, are received together with Ivanovoj A.I. - the assistant to chair of applied physics TvGU.

Reliability of results of work is based on complex use of modern experimental methods of research TSKP TvGU «spectroscopy Laboratory» (FGBOU IN "TvGU") both the software at studying and the analysis of the received results, reception of the results which are not contradicting modern scientific representations and laws, and also practical introduction of results of research in educational process.

Structure and dissertation volume. The dissertation is stated on 138 pages of the text and consists of the introduction, four heads, conclusions and the list of the used literature (193 names), contains 14 tables and 75 drawings.

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A source: SITNIKOVA Vera Evgenevna. SPECTROSCOPIC STUDYING of STRUCTURE of POLYMERIC DISPERSE SYSTEMS. The dissertation AUTOABSTRACT on competition of a scientific degree of a Cand.Chem.Sci. Tver - 2015. 2015

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