温度对还原氧化石墨烯包覆聚苯乙烯纳米颗粒电导率的影响

Effect of Temperature on Conductivity of Reduced Graphene Oxide Coated Polystyrene Nanoparticles

采用快速纳米沉淀法制备的还原氧化石墨烯/聚苯乙烯(r-GO/PS)复合高分子材料来提高高分子的电导率,r-GO包覆在PS纳米颗粒的表面且在室温下进行压片和在130℃形成具有聚集和分离结构.热压之后的r-GO片位于聚苯乙烯高分子纳米球的边缘且形成二维的导电网络.实验说明r-GO/PS在低的逾渗阈值具有较高的电导率.

In this paper,a complex of polystyrene and reduced graphene oxide was prepared by rapid nanoprecipitation.Combined with the above data,the molecular weight of the polymer and the concentration of sodium chloride are important factors influencing the particle size.Through the SEM image,it was found that the entire PS particles were coated with r-GO and the aggregation phenomenon of r-GO.After heating up,r-GO is located at the edge of the particle.Data of four probes can indicate that temperature is a key factor affecting conductivity changes.