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Photocuring of 4-arm coumarin-functionalised monomers to form highly photoreversible crosslinked epoxy coatings

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Abstract

Highly photoreversible and photocurable epoxy-based network polymers suitable for coating applications were produced by the synthesis of two coumarin-functionalised monomers. Three polymers were formed from the synthesised monomers: two of which are the monomers polymerised separately, with the third being a polymerised mixture of a 50 mol% blend of the two monomers. Through the irradiation with 365 nm UV light, high strength crosslinked networks were formed that exhibited thermal and mechanical properties similar to common commercial coating materials. These photopolymers were also tested for their photoreversible nature in response to different wavelengths of UV light using several analytical techniques as well as characterised by studying their photoinduced solubility and examining their self-healing performance. These results demonstrated the ability to tune the polymer properties, such as self-healing ability, by the monomer content as the mixed polymer exhibited exceptional healing performance and mechanical properties.

Graphical abstract: Photocuring of 4-arm coumarin-functionalised monomers to form highly photoreversible crosslinked epoxy coatings

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Publication details

The article was received on 13 Dec 2018, accepted on 22 Mar 2019 and first published on 29 Mar 2019


Article type: Paper
DOI: 10.1039/C8PY01767K
Citation: Polym. Chem., 2019, Advance Article

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    Photocuring of 4-arm coumarin-functionalised monomers to form highly photoreversible crosslinked epoxy coatings

    T. Hughes, G. P. Simon and K. Saito, Polym. Chem., 2019, Advance Article , DOI: 10.1039/C8PY01767K

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