• 文献标题:   High performance graphene- and MWCNTs-based PS/PPO composites obtained via organic solvent dispersion
  • 文献类型:   Article
  • 作  者:   GHISLANDI M, TKALYA E, SCHILLINGER S, KONING CE, DE WITH G
  • 作者关键词:   carbon nanotube, polymermatrix composites pmcs, electrical propertie, graphene
  • 出版物名称:   COMPOSITES SCIENCE TECHNOLOGY
  • ISSN:   0266-3538 EI 1879-1050
  • 通讯作者地址:   Eindhoven Univ Technol
  • 被引频次:   32
  • DOI:   10.1016/j.compscitech.2013.03.006
  • 出版年:   2013

▎ 摘  要

The concept of liquid-phase dispersion was applied for the preparation of well-dispersed suspensions of MWCNTs and graphene in chloroform, using long-time ultra-sonication without the use of surfactants. The dispersions with pre-defined filler concentration (0.5 mg/ml) were monitored via UV-Vis until the achievement of optimum exfoliation (6 h). PS/PPO polymer was dissolved in chloroform and graphene- and MWCNTs-based composite tablets were prepared via solution blending, subsequent drying and hot pressing. The well-dispersed organization of the fillers inside the polymer matrix, visualized with scanning electron microscopy, resulted in ultimate conductivities and percolation thresholds of 57 S/m and 0.2 wt.% for nanotubes composites, and 0.9 S/m and similar to 1 wt.% for graphene composites, respectively. Dynamic mechanical analysis showed that an increase in the storage moduli of the PS/PPO matrix could be gradually obtained by the insertion of fillers, e.g. reaching 3 similar to 0% of enhancement by the addition of 3 wt.% of graphene filler. The same trend in improvement, at lower augmentation, was observed for the corresponding nanotubes-based composites. (c) 2013 Elsevier Ltd. All rights reserved.