石墨烯/聚吡咯复合材料的制备及其导电性能研究

Synthesis and conductivity of graphene/polypyrrole composites via in-situ polymerization under ultrasonic

在超声条件下通过原位聚合反应制备出石墨烯/聚吡咯导电复合材料.用红外光谱(FT-IR)、扫描电镜(SEM)和透射电镜(TEM)等分析手段对复合材料的结构进行表征.结果表明,聚吡咯均匀地包覆在石墨烯的表面,热重分析(TG)和电导率测试结果显示复合材料相对于纯聚吡咯具有更好的热稳定性和电导率,这可能得益于原位聚合中聚吡咯基体中的石墨烯纳米薄片的高电导率和高比表面积.

Graphene/polypyrrole composites have been successfully synthesized via in situ polymerization under ultrasonic.The transmission electron microscopy（TEM） and scanning electron microscope（SEM） results show that PPy dresses on the surface of graphene layers.The result of thermogravimetric analysis（TGA） indicates that the graphene/PPy composites have more superior thermal stability than pure PPy.The variation of the electrical conductivities shows a substantial increment.This is perhaps due to the high conductivity and large specific surface area of the in-situ formed graphene nanosheets in PPy matrix.