Self-healing in epoxy thermoset polymer films triggered by UV light

Show simple item record Moniruzzaman, Monir Christogianni, Paraskevi Kister, Guillaume 2016-07-26T15:32:34Z 2016-07-26T15:32:34Z 2016-07-26
dc.identifier.citation Moniruzzaman M, Christogianni P, Kister G, Self-healing in epoxy thermoset polymer films triggered by UV light, Procedia Engineering, Vol. 148, 2016, pp.114-121
dc.identifier.issn 1877-7058
dc.description.abstract Self-healing of damaged structures can occur in three processes: capsule-based healing, vascular healing and intrinsic healing of polymers. The latest concept has a tremendous potential to repair damaged polymers and composite structures. Until now self-healing of composite materials has been addressed using capsule based resin with an initiator that polymerises in the damaged region. In this study, self-healing behaviour of cured epoxy thermoset resins modified with an epoxy-functionalised photoresponsive azobenzene molecule has been addressed by UV light without the use of any resin capsules or other component that is not chemically joined with the composites. The study was executed by nanoindentation and atomic force microscopy (AFM). Artificially damaged thermoset films exhibited good self-healing behaviour under UV irradiation only. This effect is attributed to the intrinsic healing mechanism triggered by UV-induced trans→cis isomerization of the azobenzene chromophore which enables the damaged polymeric matrix to recover. en_UK
dc.description.sponsorship Funded by Defence Science and Technology Laboratory (DSTL) en_UK
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 International
dc.subject Self-healing
dc.subject Azobenzene
dc.subject Nanoindentation
dc.subject Resin
dc.title Self-healing in epoxy thermoset polymer films triggered by UV light en_UK
dc.type Article en_UK

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