Materials 2011, 4(11), 1967-1984; doi:10.3390/ma4111967
Article

Toughening of a Carbon-Fibre Composite Using Electrospun Poly(Hydroxyether of Bisphenol A) Nanofibrous Membranes Through Inverse Phase Separation and Inter-Domain Etherification

1 Institute of Technology Research and Innovation, Deakin University, Victoria, Waurn Ponds 3217, Australia 2 École Nationale Supérieure des Arts et Industries Textiles (ENSAIT), Roubaix 59056, France
* Author to whom correspondence should be addressed.
Received: 1 September 2011; in revised form: 12 October 2011 / Accepted: 27 October 2011 / Published: 2 November 2011
(This article belongs to the Special Issue Fibre-Reinforced Composites)
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Abstract: 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).
Keywords: poly(hydroxyether of bisphenol A); nanofibres; fracture toughness; delamination; electro-spinning

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MDPI and ACS Style

Magniez, K.; Chaffraix, T.; Fox, B. Toughening of a Carbon-Fibre Composite Using Electrospun Poly(Hydroxyether of Bisphenol A) Nanofibrous Membranes Through Inverse Phase Separation and Inter-Domain Etherification. Materials 2011, 4, 1967-1984.

AMA Style

Magniez K, Chaffraix T, Fox B. Toughening of a Carbon-Fibre Composite Using Electrospun Poly(Hydroxyether of Bisphenol A) Nanofibrous Membranes Through Inverse Phase Separation and Inter-Domain Etherification. Materials. 2011; 4(11):1967-1984.

Chicago/Turabian Style

Magniez, Kevin; Chaffraix, Thomas; 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 4, no. 11: 1967-1984.

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