Effect of surface functionality of PAN-based carbon fibres on the mechanical performance of carbon/epoxy composites

Kafi,A, Huson,M, Creighton,C, Khoo,J, Mazzola,L, Gengenbach,T, Jones,F and Fox,B 2014, Effect of surface functionality of PAN-based carbon fibres on the mechanical performance of carbon/epoxy composites, Composites Science and Technology, vol. 94, pp. 89-95, doi: 10.1016/j.compscitech.2014.01.011.

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Title Effect of surface functionality of PAN-based carbon fibres on the mechanical performance of carbon/epoxy composites
Author(s) Kafi,A
Journal name Composites Science and Technology
Volume number 94
Start page 89
End page 95
Total pages 7
Publisher Elsevier
Place of publication Doetinchem, Netherlands
Publication date 2014-04-09
ISSN 0266-3538
Keyword(s) A. Carbon fibres
B. Fibre-matrix bond
D. Dynamic mechanical thermal analysis (DMTA)
D. Scanning electron microscopy (SEM)
X-ray photoelectron spectroscopy (XPS)
Science & Technology
Materials Science, Composites
Materials Science
Carbon fibres
Fibre matrix bond
Scanning electron microscopy (SEM)
Dynamic mechanical thermal analysis (DMTA)
Summary The performance of composite laminates depends on the adhesion between the fibre reinforcement and matrix, with the surface properties of the fibres playing a key role in determining the level of adhesion achieved. For this reason it is important to develop an in-depth understanding of the surface functionalities on the reinforcement fibres. In this work, multi-scale surface analysis of carbon fibre during the three stages of manufacture; carbonisation, electrolytic oxidation, and epoxy sizing was carried out. The surface topography was examined using scanning electron microscopy (SEM), which revealed longitudinal ridges and striations along the fibre-axis for all fibre types. A small difference in surface roughness was observed by scanning probe microscopy (SPM), while the coefficient of friction measured by an automated single fibre tester showed 51% and 98% increase for the oxidised and sized fibres, respectively. The fibres were found to exhibit heterogeneity in surface energy as evidenced from SPM force measurements. The unsized fibres were much more energetically heterogeneous than the sized fibre. A good correlation was found between fibre properties (both physical and chemical) and interlaminar shear strength (ILSS) of composites made from all three fibre types. © 2014 Elsevier Ltd.
Language eng
DOI 10.1016/j.compscitech.2014.01.011
Field of Research 090102 Aerospace Materials
091202 Composite and Hybrid Materials
Socio Economic Objective 850702 Energy Conservation and Efficiency in Transport
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30070473

Document type: Journal Article
Collections: Institute for Frontier Materials
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