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Toughening of a carbon-fibre composite using electrospun poly(Hydroxyether of Bisphenol A) nanofibrous membranes through inverse phase separation and inter-domain etherification

Magniez, Kevin, Chaffraix, Thomas and Fox, Bronwyn 2011, Toughening of a carbon-fibre composite using electrospun poly(Hydroxyether of Bisphenol A) nanofibrous membranes through inverse phase separation and inter-domain etherification, Materials, vol. 4, no. 11, pp. 1967-1984.

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Title Toughening of a carbon-fibre composite using electrospun poly(Hydroxyether of Bisphenol A) nanofibrous membranes through inverse phase separation and inter-domain etherification
Author(s) Magniez, Kevin
Chaffraix, Thomas
Fox, Bronwyn
Journal name Materials
Volume number 4
Issue number 11
Start page 1967
End page 1984
Total pages 18
Publisher M D P I AG
Place of publication Basel, Switzerland
Publication date 2011-11-02
ISSN 1996-1944
Keyword(s) poly(hydroxyether of bisphenol A)
nanofibres
fracture toughness
delamination
electro-spinning
Summary The interlaminar toughening of a carbon fibre reinforced composite by interleaving a thin layer (~20 microns) of poly(hydroxyether of bisphenol A) (phenoxy) nanofibres was explored in this work. Nanofibres, free of defect and averaging several hundred nanometres, were produced by electrospinning directly onto a pre-impregnated carbon fibre material (Toray G83C) at various concentrations between 0.5 wt % and 2 wt %. During curing at 150 °C, phenoxy diffuses through the epoxy resin to form a semi interpenetrating network with an inverse phase type of morphology where the epoxy became the co-continuous phase with a nodular morphology. This type of morphology improved the fracture toughness in mode I (opening failure) and mode II (in-plane shear failure) by up to 150% and 30%, respectively. Interlaminar shear stress test results showed that the interleaving did not negatively affect the effective in-plane strength of the composites. Furthermore, there was some evidence from DMTA and FT-IR analysis to suggest that inter-domain etherification between the residual epoxide groups with the pendant hydroxyl groups of the phenoxy occurred, also leading to an increase in glass transition temperature (~7.5 °C).
Language eng
Field of Research 091299 Materials Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2011, The Authors; licensee MDPI, Basel, Switzerland
Persistent URL http://hdl.handle.net/10536/DRO/DU:30044161

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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