The Phase Structure of Poly(N-Vinylcarbazole)-Polycarbonate Blends as Studied by Thermally Stimulated Currents and Thermo-Optical Analysis
The phase structure of poly(N-vinylcarbazole) — polycarbonate blends for applications in electrophotography was investigated. The results of Thermally Stimulated Currents measurements are interpreted in terms of polymers miscibility. It is deduced that PVK - PC mixtures are not homogeneous, however the blends did not show inhomogeneity in polarizing microscope. This conclusion is confirmed by Thermo-optical Analysis which indicated the appearance of two glass transitions in the mixtures. On the other hand, the measurements of the Lower Critical Solution Temperature show that the phase separation occurs in the samples in the temperature range of 210– –240°C depending on PVK content.
KeywordsCloud Point Lower Critical Solution Temperature Drain Voltage Thermally Stimulate Current Trapping Phenomenon
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