Abstract
Cellulose triacetate (CTA) was doped with poly(N-vinylcarbazole) during the oxidative polymerization of N-vinylcarbazole using ferric chloride as an initiator to form polymer blends. The blends were characterized by Fourier transform infrared and UV-vis spectroscopy. The surface morphology was further studied using both scanning electron microscopy and transmission electron microscopy. Langmuir-Schaefer films of the polymer blends were fabricated. The DC conductivity of the polymer films at room temperature was found to increase with an increase in CTA content up to a value of 0.001 S cm ―1 . The temperature-dependent DC conductivity of the polymer films studied in the range of 300-500 K shows an increase in conductivity with an increase in temperature indicating a semiconducting behavior with a negative temperature coefficient of resistivity. The apparent activation energy also showed a pronounced effect with an increase in the temperature as well as an increase in the content of CTA. POLYM. COMPOS., 32:79-88, 2011. © 2010 Society of Plastics Engineers.
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