Mikitaev M. A., Kozlov G. V., Zaikov G. E., Mikitaev A. K. THE DEPENDENCE OF DIFFUSIVITY ON GLASS TRANSITION TEMPERATURE FOR COMPOSITES OF POLY(VINYL ACETATE)/TITANIUM DIOXIDE
Mikitaev Muslim Abdulakhovich
Candidate of Chemical Sciences, Senior Researcher,
Department of Organic Chemistry and Macromolecular Compounds,
Kabardino-Balkarian State University named after H. M. Berbekov
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Chernyshevskogo St., 175, 360004 Nalchik, Russian Federation
Kozlov Georgiy Vladimirovich
Senior Researcher,
Department of Organic Chemistry and Macromolecular Compounds,
Kabardino-Balkarian State University named after H. M. Berbekov
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Chernyshevskogo St., 175, 360004 Nalchik, Russian Federation
Zaikov Gennadiy Efremovich
Doctor of Chemical Sciences, Professor,
Head of Department of Biological and Chemical Physics of Polymers,
Institute of Biochemical Physics named after N. M. Emanuel, RAS
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Kosygina St., 4, 119334 Moscow, Russian Federation
Mikitaev Abdulakh Kasbulatovich
Doctor of Chemical Sciences, Professor,
Department of Organic Chemistry and Macromolecular Compounds,
Kabardino-Balkarian State University named after H. M. Berbekov
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Chernyshevskogo St., 175, 360004 Nalchik, Russian Federation
Abstract. The aim of this work is the structural analysis of the change of the diffusion coefficient with increasing filler content for composites based on TiO2. The structural treatment of diffusion process of water vapors in particulate-filled composite poly(vinyl acetate)/titanium dioxide has been proposed. It has been shown that the diffusivity is defined by total fraction of three densely-packed structural components of composite. The same structural factor controls glass transition temperature of composite.
Thus, the results of this work demonstrated the dependence of the diffusion coefficient of polymer composites from their glass transition temperature. In turn, this temperature and, consequently, the diffusion coefficient is determined by the relative proportion of dense regions of polymer composite structure that is consistent with the proposed concepts. The considered model allows us to estimate the limiting value of the glass transition temperature and diffusion coefficient of composites of polyvinyl acetate/titanium dioxide.
Key words: composite, structure, densely-packed regions, diffusivity, glass transition temperature.
THE DEPENDENCE OF DIFFUSIVITY ON GLASS TRANSITION TEMPERATURE FOR COMPOSITES OF POLY(VINYL ACETATE)/TITANIUM DIOXIDE by Mikitaev M. A., Kozlov G. V., Zaikov G. E., Mikitaev A. K. is licensed under a Creative Commons Attribution 4.0 International License.
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