NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2012, 3 (2), P. 65–72
STRUCTURE AND ELECTRETS PROPERTIES OF POLYPROPYLENE FILMS WITH AMORPHOUS DIOXIDE OF SILICON
Smirnov Alexander Vitalijevich – Saint-Petersburg National Research University of Information Technologies, Mechanics and Optics, Associate Professor, Ph.D., smirnav@phd.ifmo.ru
Fedorov Boris Alexandrovich – Saint-Petersburg National Research University of Information Technologies, Mechanics and Optics, Professor, D. Sc., borfedorov@rambler.ru
Temnov Dmitry Edwardovich – Saint-Petersburg National Research University of Information Technologies, Mechanics and Optics, Associate Professor, Ph.D., detem@yandex.ru
Fomicheva Elena Egorovna – Saint-Petersburg National Research University of Information Technologies, Mechanics and Optics, Assistant, Ph.D., fee83@yandex.ru
Structural and electric properties of the composite polymeric films with disperse filler (an amorphous dioxide of silicon) was investigated. Research of samples by a Small Angle X-ray method has shown that the surface of particles is smooth and the increase in its concentration doesn’t lead to formation of agglomerates. Data of thermoactivation spectroscopy shows that the electrets state relaxation in investigated samples is caused by the expense of their volume
conductivity. To explain growth of conductivity with increase in percentage of disperse particles it is possible occurrence of additional conductivity on a surface of particles of a filler.
Keywords: polypropylene, aerosil, small-angle X-ray scattering , specific surface, size distribution, thermally stimulated conductivity, potential relaxation.
UDC 539.22; 539.261; 538.956
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