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.
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页数：6
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