Abstract
The influence of relaxation processes on electret properties of high-impact polystyrene (HIPS) free-standing films filled with titanium dioxide (TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ) of rutile modification are investigated by means of the combination of dynamic-mechanical and dielectric methods: thermally stimulated depolarization current (TSDC) measurements, thermally stimulated surface potential decay (TSSPD), dielectric relaxation spectroscopy (DRS), dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC). Films with 2, 4, 6 and 8 vol.% TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> as well as the pure HIPS are compared.
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