Electrical Properties of Composites of Polystyrene and Multi-Walled Carbon Nanotubes

被引：0
|
作者：
Kazukauskas, V. [1 ,2 ]
Kalendra, V. [1 ,2 ]
Vainorius, N. [1 ,2 ]
Bumby, C. W. [3 ]
Ludbrook, B. M. [3 ]
Kaiser, A. B. [3 ]
机构：
[1] Vilnius Univ, Semicond Phys Dept, LT-10222 Vilnius, Lithuania
[2] Vilnius Univ, Inst Appl Res, LT-10222 Vilnius, Lithuania
[3] Victoria Univ Wellington, MacDiarmid Inst Adv Mat & Nanotechnol, SCPS, Wellington, New Zealand
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2012年 / 556卷
关键词：
Carbon nanotubes; composites; conductivity; polystyrene; CONDUCTING POLYMERS;
D O I：
10.1080/15421406.2012.635943
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The dependencies of electrical conductivity on the electrical field and temperature of high-resistivity polystyrene/carbon nanotube (CNT) composites were investigated. The electrical conductivity of the samples and their thermal activation energy were systematically dependent on the CNT doping level. Several unusual phenomena were observed which could be explained by the inhomogeneous distribution of CNTs in the polystyrene matrix. At higher levels of CNT doping, an interconnected conducting network is formed. If the amount of CNT is equal to or less than 0.6%, "islands" of CNT become separated by the layers of polystyrene, which limit charge transport. At low voltages, there is a sharper decrease in conductance as the voltage decreases.
引用
收藏
页码：158 / 167
页数：10
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