• 文献标题:   Microstructure of fibres pressure-spun from polyacrylonitrile-graphene oxide composite mixtures
  • 文献类型:   Article
  • 作  者:   AMIR A, PORWAL H, MAHALINGAM S, WU XW, WU TF, CHEN BQ, TABISH TA, EDIRISINGHE M
  • 作者关键词:  
  • 出版物名称:   COMPOSITES SCIENCE TECHNOLOGY
  • ISSN:   0266-3538 EI 1879-1050
  • 通讯作者地址:   UCL
  • 被引频次:   1
  • DOI:   10.1016/j.compscitech.2020.108214
  • 出版年:   2020

▎ 摘  要

Suspensions containing 8 and 10 wt% polyacrylonitrile (PAN) and 1, 2, 3, 5, 7 and 10 wt% graphene oxide (GO) were prepared using a special mixing routine and fibres were generated from these mixtures by pressurised gyration. The combination of pressure and gyration speed was effective in controlling the fibre morphology and fibre diameter which ranged from 1 to 20 mu m. Fibres were pyrolysed to remove the polymer and only the 10 wt% PAN fibres survived. The microstructure of the pre-and post-pyrolysis products were characterised by scanning electron microscopy, both with and without focussed ion beam etching, Fourier-transformed infrared and Raman spectroscopies. Pyrolysed fibre electrical conductivities were measured and only those containing 1 and 2 wt% GO were conductive.