任英,吴晶军,周其云

• 1:化学工程联合国家重点实验室(浙江大学)
• 2:浙江大学化学工程与生物工程学系

摘要(Abstract)：

将定向冰晶模板致孔技术引入到冰冻聚合过程当中,制备出具有取向性孔结构的聚乙二醇(PEG)多孔凝胶。在凝胶内表面的孔壁上吸附沉积一层致密的碳纳米管(CNTs),得到一种特殊的PEG/CNTs复合多孔凝胶。通过对PEG凝胶的共聚改性,可以使得吸附的CNTs层更加均匀、致密,沉积的CNTs的含量达到1.0%(wt),而未经改性的PEG凝胶只能吸附约0.08%(wt)的CNTs。该复合凝胶在干燥状态下的导电率为1.5×10-1 S·m-1,比相同CNTs含量下,用常规原位聚合方法制备的CNTs复合凝胶的导电率(2.7×10-4 S·m-1)高出3个数量级;比用相同聚合方法制备的未经过改性的复合凝胶(2.9×10-4 S.m-1)也要高出3个数量级。该复合凝胶在充分溶胀状态下的导电率为5.2×10-2 S·m-1,比相同CNTs含量下,用常规原位聚合方法制备的CNTs复合凝胶的导电率高出2个数量级。

关键词(KeyWords)： 多孔凝胶;碳纳米管;沉积;电导率

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 任英,吴晶军,周其云

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