Electrical properties and glass transition temperature of multiwalled carbon nanotube/polyaniline composites

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• 作者：Mansoor Farbod ; ^{farbod_m@scu.ac.ir} ; Somayeh Khajehpour Tadavani
• 关键词：PANI ; Electrical properties ; Functionalized carbon nanotube ; Glass transition temperature
• 刊名：Journal of Non-Crystalline Solids
• 出版年：2012
• 期刊代码：50_00223093
• 类别：ms
• 出版时间：1 June, 2012
• 卷：358
• 期：11
• 页码：1339-1344
• 文件大小：1070 K

摘要

Polyaniline (PANI) was synthesized and doped with 0, 2, 4 and 16 wt.%of pure and functionalized multiwall carbon nanotubes (MWCNTs) by 鈥渋n-situ鈥?polymerization. Measurement of temperature dependence of electrical resistivity showed a reduction in the resistivity of the composites at all temperatures. The reduction was increased by increasing the wt.%of MWCNTs. This decrease was more for the composites containing functionalized MWCNTs and was more prominent for temperatures below 150 K. The glass transition temperature (T_g) of the pure and doped PANI was measured using electrical resistivity measurements. It was observed that by increasing the amount of functionalized MWCNTs in PANI, its T_g increases. Temperature dependence of resistivity of pressed pure PANI showed that by increasing the pelletization pressure, the bulk electrical resistivity decreased but the T_g increased.