氧化石墨增强高分子材料热电性能的初步研究  

A preliminary study of the enhanced thermoelectric performance of polymer materials containing graphite oxide

作　　者：赵媛[1] 唐光诗[1] 

机构地区：[1]北京化工大学理学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2012年第3期60-65,共6页Journal of Beijing University of Chemical Technology(Natural Science Edition)

摘　　要：分别以尼龙6和聚吡咯为基体,氧化石墨为填料,通过原位聚合反应制备了尼龙6-氧化石墨及聚吡咯-氧化石墨复合材料。两种复合材料的热电性能测试数据表明:氧化石墨在尼龙6基体中被同步还原为导电填料,尼龙6从绝缘体转变为半导体,热电性能大大增强,最大热电优值为9.45×10-6;氧化石墨在吡咯聚合过程中扮演着模板的角色,促成聚吡咯分子链有序排列及堆积,热电性能增强,且复合材料的电导率和Seebeck系数的最大值分别达到6056 S/m和9.85μV/K,对应的热电优值为6.89×10-4。Nylon 6 and polypyrrole as matrices and graphite oxide as a filler have been used to fabricate nylon 6-graphite oxide and polypyrrole-graphite oxide composites by in situ polymerization.Nylon 6 was transformed from an insulator into a semiconductor,since graphite oxide underwent reduction to become a conducting filler in nylon 6.The thermoelectric performance of nylon 6 was greatly enhanced,with a maximum value-of-merit of 9.45 × 10-6.Graphite oxide acted as a template inducing the alignment and ordered accumulation of the polypyrrole molecular chains during polymerization,leading to enhanced thermoelectric performance.The maximum electrical conductivity and Seebeck coefficient reached 6056S/m and 9.85μV/K,respectively.The maximum thermoelectric figure of merit was 6.89 × 10-4.

关 键 词：热电性能 氧化石墨 尼龙6 聚吡咯 复合材料 

分 类 号：O631.2[理学—高分子化学]