Microstructure of fibres pressure-spun from polyacrylonitrile–graphene oxide composite mixtures

Amalina Amir, Harshit Porwal, Suntharavathanan Mahalingam, Xiaowen Wu, Tongfei Wu, Biqiong Chen, Tanveer A. Tabish, Mohan Edirisinghe*

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

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 μm. 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.

Original languageEnglish
Article number108214
JournalComposites Science and Technology
Volume197
Early online date11 May 2020
DOIs
Publication statusPublished - 08 Sep 2020

ASJC Scopus subject areas

  • Ceramics and Composites
  • Engineering(all)

Fingerprint Dive into the research topics of 'Microstructure of fibres pressure-spun from polyacrylonitrile–graphene oxide composite mixtures'. Together they form a unique fingerprint.

  • Cite this