Carbon nanotube grafted carbon fibres: A study of wetting and fibre fragmentation
File(s)
Author(s)
Qian, Hui
Bismarck, A
Greenhalgh, ES
Shaffer, MSP
Type
Journal Article
Abstract
Carbon nanotubes (CNTs) were grafted on IM7 carbon fibres using a chemical vapour deposition method.The overall grafting process resulted in a threefold increase of the BET surface area compared to the original primary carbon fibres (0.57 m2/g). At the same time, there was a degradation of fibre tensile strength by around 15% (depending on gauge length), due to the dissolution of iron catalyst into the carbon;
the modulus was not significantly affected. The wetting behaviour between fibres and poly(methyl
methacrylate) (PMMA) was directly quantified using contact angle measurements for drop-on-fibre systems and indicated good wettability. Single fibre fragmentation tests were conducted on hierarchical fibre/PMMA model composites, demonstrating a significant (26%) improvement of the apparent interfacial shear strength (IFSS) over the baseline composites. The result is associated with improved stress transfer between the carbon fibres and surrounding matrix, through the grafted CNT layer. The improved IFSS was found to correlate directly with a reduced contact angle between fibre and matrix.
the modulus was not significantly affected. The wetting behaviour between fibres and poly(methyl
methacrylate) (PMMA) was directly quantified using contact angle measurements for drop-on-fibre systems and indicated good wettability. Single fibre fragmentation tests were conducted on hierarchical fibre/PMMA model composites, demonstrating a significant (26%) improvement of the apparent interfacial shear strength (IFSS) over the baseline composites. The result is associated with improved stress transfer between the carbon fibres and surrounding matrix, through the grafted CNT layer. The improved IFSS was found to correlate directly with a reduced contact angle between fibre and matrix.
Date Issued
2010
Citation
Composites Part A, 2010, 41, pp.1107-1114
ISSN
1359-835X
Publisher
Elsevier
Start Page
1107
End Page
1114
Journal / Book Title
Composites Part A
Volume
41
Issue
9
Copyright Statement
© 2010 Elsevier Ltd. All rights reserved. “NOTICE: this is the author’s version of a work that was accepted for publication in Composites Part A: Applied science and manufacturing. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composites Part A: Applied science and manufacturing, Vol 41, Issue 9, (2010) DOI 10.1016/j.compositesa.2010.04.004”.
Description
26/09/12 meb. Author version, OK to pub.
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000280946000012&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Publication Status
Published