A Novel Approach to the Functionalisation of Pristine Carbon Fibre Using Azomethine 1,3-Dipolar Cycloaddition
Linden Servinis A , Thomas R. Gengenbach B , Mickey G. Huson C , Luke C. Henderson A D and Bronwyn L. Fox A
+ Author Affiliations
- Author Affiliations
A Deakin University, Institute for Frontier Materials, Pigdons Road, Waurn Ponds Campus, Geelong, Vic. 3216, Australia.
B CSIRO Materials Science and Engineering, Bayview Avenue, Clayton, Vic. 3168, Australia.
C CSIRO Materials Science and Engineering, Waurn Ponds, Geelong, Vic. 3216, Australia.
D Corresponding author. Email: luke.henderson@deakin.edu.au
Australian Journal of Chemistry 68(2) 335-344 https://doi.org/10.1071/CH14254
Submitted: 23 April 2014 Accepted: 10 May 2014 Published: 14 July 2014
Abstract
We demonstrate the utilisation of an azomethine 1,3-dipolar cycloaddition reaction with carbon fibre to graft complex molecules onto the fibre surface. In an effort to enhance the interfacial interaction of the fibre to the matrix, the functionalised fibres possessed a pendant amine that is able to interact with epoxy resins. Functionalisation was supported by X-ray photoelectron spectroscopy and the grafting process had no detrimental effects on tensile strength compared with the control (untreated) fibres. Also, microscopic roughness (as determined by atomic force microscopy) and fibre topography were unchanged after the described treatment process. This methodology complements existing methodology aimed at enhancing the surface of carbon fibres for advanced material applications while not compromising the desirable strength profile. Single-fibre fragmentation tests show a statistically significant decrease in fragment length compared with the control fibres in addition to transverse cracking within the curing resin, both of which indicate an enhanced interaction between fibre and resin.
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