聚苯胺/氧化石墨烯导电复合材料的制备

周宝珍， 曲顺志， 孙同杰， 闫路瑶， 赵丽， 胡海青*

（青岛科技大学 橡塑材料与工程教育部重点实验室；山东省橡塑材料与工程重点实验室，山东 青岛 266042）

摘要： 通过原位聚合非二次掺杂制备了高导电性聚苯胺/氧化石墨烯复合材料。采用盐酸为掺杂酸，研究了聚苯胺/氧化石墨烯的微观形貌；探讨了盐酸浓度及氧化石墨烯（GO）用量对反应过程和复合材料导电性的影响。结果表明：聚苯胺（PANI）以球状物的形式均匀地包覆在GO表面；盐酸浓度超过05 mol·L-1，反应诱导期明显缩短，复合材料的导电性显著提高。在聚合体系中加入GO可延长聚合反应诱导期，但随着GO用量的增加反应诱导期缩短。当盐酸浓度为05 mol·L-1，GO与苯胺单体质量比超过2%时，制备的PANI/GO复合材料中GO形成导电通路，电导率较纯PANI提高一个数量级，达到14 S·cm-1。

关键词： 聚苯胺； 氧化石墨烯； 原位聚合； 电导率

中图分类号： TU 45     文献标志码： A

 Preparation of Conductivity Polyaniline/Graphene Oxide Composites

 ZHOU Baozhen, QU Shunzhi, SUN Tongjie, YAN Luyao, ZHAO Li, HU Haiqing 

（Key Laboratory of RubberPlastics， Ministry of Education；Shandong Provincial Key Laboratory of RubberPlastics, Qingdao University of Science and Technology, Qingdao 266042, China）

Abstract: Dispersion of high conductive conductivity PANI/GO composites were produced by in situ polymerization with HCl as doping acid without secondary doping. The morphology of PANI/GO was observed by SEM. The effects of HCl concentration and the content of GO on the stability of polymerization and conductivity of the PANI/GO composites was investigated. The results show that PANI deposited at the surface of GO. Furthermore, reaction induction period of PANI/GO reaction shorten significantly with the concentration of HCl more than 05 mol·L-1; Moreover the conductivity of PANI/GO composites was remarkable improved with increasing the concentration of HCl. The reaction induction period of PANI/GO reaction was extended due to GO joined the polymerization system. However, the reaction induction period shorten with the increasing content of GO. When HCl was 05 mol·L-1 and the mass ratio of GO/aniline monomer was more than 2%, conductive path of GO was formed in PANI/GO composites, furthermore the conductivity was improved an order of magnitude to 14 S·cm-1 compared with that of pure PANI.

Key words: polyanline; graphene oxide; in situ polymerization; conductivity

收稿日期： 20131128

基金项目： 国家自然科学基金项目（51373084）；山东省自然科学基金项目（ZR2012EMM003）；

青岛市科学基础研究项目（12143(7)jch）.

作者简介： 周宝珍(1985—)，女，硕士研究生.    *通信联系人.