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

Amir, A; Porwal, H; Mahalingam, S; Wu, X; Wu, T; Chen, B; Tabish, TA; (2020) Microstructure of fibres pressure-spun from polyacrylonitrile – graphene oxide composite mixtures. Composites Science and Technology , 197 , Article 108214. 10.1016/j.compscitech.2020.108214. Green open access

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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.

Type: Article
Title: Microstructure of fibres pressure-spun from polyacrylonitrile – graphene oxide composite mixtures
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.compscitech.2020.108214
Publisher version: https://doi.org/10.1016/j.compscitech.2020.108214
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Cancer Institute
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Cancer Institute > Research Department of Oncology
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10098070
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