Dielectric relaxation in polyvinyl alcohol-polypyrrole-multiwall carbon nanotube composites below room temperature

被引：54

作者：

Chakraborty, Goutam ^{[1
]}

Gupta, Kajal ^{[1
]}

Rana, Dipak ^{[2
]}

Meikap, Ajit Kumar ^{[1
]}

机构：

[1] Natl Inst Technol, Dept Phys, Durgapur 713209, W Bengal, India

[2] Univ Ottawa, Ind Membrane Res Inst, Dept Chem & Biol Engn, Ottawa, ON K1N 6N5, Canada

来源：

ADVANCES IN NATURAL SCIENCES-NANOSCIENCE AND NANOTECHNOLOGY | 2013年 / 4卷 / 02期

关键词：

polyvinyl alcohol; polypyrrole; VRH theory; charge transport; dielectric properties;

D O I：

10.1088/2043-6262/4/2/025005

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Polyvinyl alcohol-polypyrrole-multiwall carbon nanotube composite polymer films have been synthesized by a chemical oxidative polymerization technique. Dielectric properties have been measured in the frequency range from 20 Hz to 1 MHz and in the temperature range 77 <= T <= 300 K. Electric modulus vector analysis gives the presence of dielectric relaxation peaks for different composites from which the activation energies have been calculated.

引用

页数：6

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