• 文献标题:   Electrically conductive graphene-filled polymer composites with well organized three-dimensional microstructure
  • 文献类型:   Article
  • 作  者:   ZHAO PF, LUO YY, YANG JL, HE DN, KONG LX, ZHENG P, YANG Q
  • 作者关键词:   electrical property, graphene, polymer, nanocomposite, threedimensional microstructure
  • 出版物名称:   MATERIALS LETTERS
  • ISSN:   0167-577X EI 1873-4979
  • 通讯作者地址:   Chinese Acad Trop Agr Sci
  • 被引频次:   29
  • DOI:   10.1016/j.matlet.2014.01.100
  • 出版年:   2014

▎ 摘  要

Electrically conductive graphene-filled polystyrene nanocomposites with well-organized three dimensional (3D) microstructures were simply prepared by electrostatic assembly integrated latex technology. First, positively charged polystyrene was synthesized via disperse polymerization in ethanol/water medium by using a cationic co-monomer, and then directly co-assembled with graphene oxide. Eventually, a honeycomb-like graphene 3D framework was embedded in polystyrene matrix after in situ chemical reduction and hot compression molding. Due to the 3D conductive pathway derived from graphene based network evidenced by morphology studies, the fabricated nanocomposites Show excellent electrical properties, i.e. extremely low percolation threshold of 0.09 vol% and high saturated conductivity of 25.2 S/m at GNs content of 1.22 vol%. (C) 2014 Elsevier B.V. All rights reserved.