【摘要】 利用超声波的分散、粉碎、活化、引发等多重作用以及吡咯单体与石墨烯的π-π相互作用,在实现石墨烯均匀分散的同时,使吡咯单体在石墨烯表面进行原位聚合反应,制备出聚吡咯/石墨烯(PPy/RGO)纳米复合材料。运用扫描电子显微镜(SEM)、红外光谱(FTIR)、X射线光电子能谱(XPS)等测试手段对PPy/RGO纳米复合材料的表面特性、化学组成及结构等进行了表征。在此基础上,研究了制备过程中的各种因素(如氧化剂、反应温度、石墨烯含量等)对PPy/RGO纳米复合材料产率及导电性能的影响。并采用热重分析(TGA)和导电测试分析了石墨烯含量对其热稳定性及电导率的影响。更多还原

【Abstract】 Taking advantages of the multiple effects of ultrasonic irradiation( dispersion,pulverizing,activation and initiation),graphene sheets were dispersed into nanoscale.Meanwhile,in-situ polymerization of pyrrole monomer on graphene surface was carried out.The high surface area in graphene and π-πinteractions between aromatic structures of pyrrole and the basal plane of the graphene surface made the synthesized polypyrrole depositing on graphene surface.Polyprrole / graphene( PPy / RGO) nanocomposites were prepared.The surface property,chemical composition and structure of polyprrole / graphene( PPy /RGO) nanocomposites were investigated by scanning electron microscope( SEM),Fourier transform infrared spectroscopy( FTIR),and X-ray photoelectron spectroscopy( XPS).On these bases,effects of different factors during the process of PPy / RGO in-situ polymerization( such as oxidizer categories,oxidizer concentration,and temperature and RGO contents) on the productivity and electric properties of PPy / RGO were investigated.Thermal stability and conductivity of PPy / RGO nanocomposites with different RGO contents were also analyzed.更多还原