Large dielectric constant of the chemically purified carbon nanotube/polymer composites

被引：96

作者：

Li, Qun ^{[1
]}

Xue, Qingzhong ^{[1
]}

Zheng, Qingbin ^{[1
]}

Hao, Lanzhong ^{[1
]}

Gao, Xili ^{[1
]}

机构：

[1] China Univ Petr, Coll Phys Sci & Technol, Dongying 257061, Shandong, Peoples R China

来源：

MATERIALS LETTERS | 2008年 / 62卷 / 26期

关键词：

carbon nanotube; composite materials; electrical properties; percolation threshold;

D O I：

10.1016/j.matlet.2008.06.047

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The chemically purified multiwalled carbon nanotube/poly(vinylidene fluoride) (MWCNT/PVDF) composites were fabricated. Raman spectroscopy and transmission electron microscopy micrographs indicated that the catalysts metal particles and amorphous carbon had been removed from the purified MWCNTs. The percolation threshold of the composites is relatively large. about 3.8 vol.%. The most important result is that the dielectric constant of the composires is enhanced remarkably, and the dielectric constant of 3600 is obtained in the composite with 8 vol.% purified MWCNT at 1 kHz. The large dielectric constant can be attributed to the preparation procedure and the interface effect between the MWCNTs and the polymer. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：4229 / 4231

页数：3

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