Abstract
The purpose of this study is to investigate the electret properties and charge states of the nanocomposites based on the polyvinylidenefluoride and titanium dioxide nanoparticles. It has been found that, large amount of charges are accumulated in the interface as a result of migration polarization and these charges create rather large internal local field in which the polarization of titanium-dioxide nanoparticles occurs. Calculated, the amount of the charges accumulated in the interfacial layer of nanocomposites, the intensity of the field created by them and the value of charge activation energy of PVDF/TiO2 nanocomposites after polarization from thermally stimulated depolarization (TSD) curves. As well as the thickness of the interphase layer of PVDF/TiO2 nanocomposites was calculated and it has been revealed that, as titanium dioxide content increases in the polymeric matrix, the thickness of the interphase layer increases and reaches at its highest value at 5% volume content of TiO2 nanoparticles, after this it commences to decrease.
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