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Making of Graphene Fibre Composites using Pressurised Gyration

Amir, Amalina; (2019) Making of Graphene Fibre Composites using Pressurised Gyration. Doctoral thesis (Ph.D), UCL (University College London). Green open access

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Abstract

This work is motivated by the goal to open up new markets and even replace existing technologies or materials using graphene as a disruptive technology. Only when graphene is used both as an improvement to existing material and in a transformational capacity, its true potential can be realised. Therefore, this project seeks to develop graphene fibres in order to utilise the advantages over carbon fibres for application in fibre-based devices including high strength, electrical and thermal conductivities, low cost, lightweight, and ease of functionalization. A simple and effective process combining pressure and centrifugal spinning has been developed and used to produce composite fibres consisting of graphene nanoplatelets. Thermoplastic polyurethane, phenolic resin and polyvinylpyrrolidone polymers were used as matrices. Precursor of carbon, polyacrylonitrile and graphene oxide were used in combination to study the effect of performing graphene fibre after pyrolysis. Processing parameters such as rotation speed, pressure and polymer concentration had a marked influence on the composite fibre diameter. Focused ion beam milling and etching verified the effective incorporation of the graphene nanoplatelets in the composite fibres. Morphological, rheological, physicochemical and thermal properties of the composite fibres were evaluated to uncover possible applications areas of these products.

Type: Thesis (Doctoral)
Qualification: Ph.D
Title: Making of Graphene Fibre Composites using Pressurised Gyration
Event: UCL
Open access status: An open access version is available from UCL Discovery
Language: English
Additional information: Copyright © The Author 2019. Original content in this thesis is licensed under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) Licence (https://creativecommons.org/licenses/by/4.0/). Any third-party copyright material present remains the property of its respective owner(s) and is licensed under its existing terms.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
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 Med Phys and Biomedical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10074705
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