Development of carbon nanotube-polymer composites with oriented distribution of MWCNTs induced by electric field

被引：13

作者：

Yakovenko, Olena ^{[1
]}

Matzui, Ludmila ^{[1
]}

Vovchenko, Ludmila ^{[1
]}

Zhuravkov, Alexander ^{[1
]}

机构：

[1] Taras Shevchenko Natl Univ Kyiv, UA-01601 Kiev, Ukraine

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2014年 / 211卷 / 12期

关键词：

carbon nanotubes; composites; conductivity; electric fields; optical microscopy; polymers; AC DIELECTROPHORESIS; EPOXY COMPOSITES; CONDUCTIVITY;

D O I：

10.1002/pssa.201431394

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

MWCNTs/polymer composites with filler distribution induced by electric fields were investigated by optical microscopy. MWCNTs aligned network formation in the large-scale MWCNTs/epoxy conductive composites was developed by following on applied voltage time dependency during the curing. Resistivity measurements of samples of the different MWCNTs concentration aligned in an AC electric field have shown that the critical concentration of the percolation limit is more than 10 times lower as compared to MWCNTs/epoxy composites with randomly distributed filler. The obtained samples revealed anisotropy of electrical conductivity the value of which is more significant for composites with low MWCNTs concentration (0.05-0.2 wt.%) due to the predominant decrease of resistivity in the direction perpendicular to the external electric field for higher MWCNTs content. (C) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：2718 / 2722

页数：5

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