Hayne DJ, Dharmasiri B, Stojcevski F, Eyckens DJ, Hooper JF, Henderson LC. Carbon fibre surface modification facilitated by silver-catalysed radical decarboxylation.
Chem Commun (Camb) 2023;
59:9860-9863. [PMID:
37490281 DOI:
10.1039/d3cc02482b]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
A silver catalysed radical decarboxylation process was used to graft a copolymer (4 : 1; methylacrylate/acrylic acid) onto short carbon fibres. Surface grafting was confirmed by XPS, SEM and TGA, suggesting that the polymer accounted for 10% of the modified materials mass. Incorporation of these surface enhanced carbon fibres into an epoxy resin gave composites demonstrating an increase in ductility and a clear change in failure mode from adhesive, at the fibre-matrix interface, to cohesive, within the matrix polymer itself.
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