掺入碳纳米管提高聚苯乙炔的导电性研究  

Study on Improvement of Electrical Property of Popyphenylacetylene by Doping with Carbon Nanotubes

作　　者：李相美[1] 石岩[1] 徐学诚[1] 余维[2] 成荣明[1] 陈奕卫[1] 

机构地区：[1]华东师范大学物理系,上海200062 [2]华东理工大学物理系,上海200237

出　　处：《材料导报（网络版）》2006年第1期23-25,共3页Materials Review

摘　　要：用AlCl3作催化剂制备了聚苯乙炔（PPA），采用共混法制备了碳纳米管（CNTs）与PPA的复合材料，并进行了导电性能测试，结果表明，当CNTs含量增加时，复合材料的电导率升高，CNTs含量为3%时是复合材料导电的临界浓度，当CNTs含量达25%时复合材料达极限电导率，比纯的PPA的电导率提高了13个数量级。CNTs/PPA复合材料的导电机理符合导电通道理论。Study is presented on the conductivity of polyphenylacetylene（PPA） （prepared by polymerization of the phenylacetylene,AlCl3 as catalyst.）/ carbon nanotubes（CNTs） composite, which is simply synthesized by blending CNTs with PPA in tetrahydrofuran under sonication. The conductivity of the composite is measured. The conductivity of the composite increases with the concentration of CNTs raising; The estimated percolation threshold of PPA/CNTs is 3%, and the amount of CNTs that are added to PPA for obtaining the maximum conductivity is 25%;The conductivity of the composite enhances by 13 orders of magnitudes. The conductivity mechanism of the composite agrees with simple percolation path theory.

关 键 词：碳纳米管(CNTs) 聚苯乙炔(PPA) 电导率 导电通道理论 

分 类 号：O631.23[理学—高分子化学]