碳纳米管/ 聚苯乙炔复合材料的导电性

李相美; 徐学诚; 余维; 顾英俊; 石岩; 成荣明; 陈奕卫

碳纳米管/ 聚苯乙炔复合材料的导电性

1.
华东师范大学纳米功能材料与器件应用研究中心, 上海 200062 ;
3.
华东理工大学物理系, 上海 200237 ;

基金项目: 上海市纳米科技专项基金资助项目(0252nm011)

详细信息

通讯作者:
徐学诚, 研究员, 主要从事高分子材料的研究工作　E-mail : ys03122062 @student . ecnu. edu. cn

中图分类号: TB332
计量
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- 被引次数: 0
出版历程
- 收稿日期: 2005-10-31
- 修回日期: 2006-01-18
- 刊出日期: 2006-10-15

Electrical property of carbon nanotubes/ polyphenylacetylene composites

1.
Center of Functional Nanomaterials and Devices| East China Normal University| Shanghai 200062| China ;
2.
Department of Physics of East China University of Science and Technology| Shanghai 200237| China ;
3.
Department of Physics of East China University of Science and Technology| Key Laboratory forUlt rafine Materials of Minist ry of Education| Shanghai 200237| China

摘要

摘要: 用AlCl₃ 作催化剂制备了聚苯乙炔( PPA) , 用浓H₂SO₄ 进行磺化改性, 通过共混制得碳纳米管(CNT) /PPA 及磺化CNT/ PPA 复合材料, 进行导电性能、XRD 等测试。当CNT 含量增加时, 复合材料的电导率升高, 磺化CNT/ PPA 的导电阈值比CNT/ PPA 的导电阀值降低了1 %, 前者达到极限电导率所需CNT 的量是后者的10 %; 分析了随着温度变化影响复合材料电阻变化的因素; XRD 测试表明, 在CNT 界面上的磺化PPA 有新的晶型产生。
- 碳纳米管(CNT) /
- 聚苯乙炔( PPA) /
- 电导率 /
- XRD /
- 复合材料
Abstract: Polyphenylacetylene ( PPA) was prepared with anhydrous AlCl₃ as catalyst , and sulfonated by concent rated H₂SO₄ . The conductivities were studied for carbon nanotubes (CNT) / PPA and sulfonated CNT/ PPA composite , which were prepared by mixing CNT with polymer in tet rahydrofuran under sonication. The room temperature conductivity of the two kinds of composites increases with increasing the ratio of CNT. The estimated percolation threshold of sulfonated CNT/ PPA is 1 % less than that of CNT/ PPA and the amount of CNT added to PPA forobtaining the maximum conductivity is 10 % of that of the sulfonated PPA. And the factors that affect the conductivity of the composites were analyzed when the temperature changes. The XRD shows that the sulfonated PPA hascreated a new crystal st ructure on the interface of CNT.
- carbon nanotubes (CNT) /
- polyphenylacetylene (PPA) /
- conductivity /
- XRD /
- composites