Plasmonic nanoparticle-based epoxy photocuring: A deeper look

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dc.citation.firstpage14en_US
dc.citation.journalTitleMaterials Todayen_US
dc.citation.lastpage20en_US
dc.citation.volumeNumber27en_US
dc.contributor.authorRoberts, Adam T.en_US
dc.contributor.authorYang, Jianen_US
dc.contributor.authorReish, Matthew E.en_US
dc.contributor.authorAlabastri, Alessandroen_US
dc.contributor.authorHalas, Naomi J.en_US
dc.contributor.authorNordlander, Peteren_US
dc.contributor.authorEveritt, Henry O.en_US
dc.date.accessioned2019-08-28T16:10:12Zen_US
dc.date.available2019-08-28T16:10:12Zen_US
dc.date.issued2019en_US
dc.description.abstractMany epoxyﾠadhesivesﾠrequire high temperatures to bondﾠcomposite materials. However, oven heating severely restricts what may be attached or enclosed within composite material-based structures and greatly limits the possibilities for repair. Inspired by initial reports of photothermal epoxy curing usingﾠplasmonicnanoparticles, we examine how laser-illuminated Au nanoparticles embedded within high-temperature epoxy films convert the conventional thermal curing process into a photothermally driven one. Our theoretical investigations reveal that plasmonic nanoparticle-based epoxy photocuring proceeds through a four-stage process: a rapid, plasmon-induced temperature increase, a slow localizedﾠinitializationﾠof the curing chemistry that increases theﾠoptical absorptionﾠof the epoxy film, a subsequent temperature increase as the epoxy absorbs theﾠlaser radiationﾠdirectly, and a final stage that completes theﾠchemical transformationﾠof the epoxy film to its cured state. Our experimental studies validate this model, and also reveal that highly local photocuring can create a stronger bond between composite materials than thermal curing without nanoparticles, at times even stronger than the composite material itself, substantially reducing the time needed for the curing process. Our findings support key advances in our understanding of this approach to the rapid, highly efficient bonding and repair of composite materials.en_US
dc.identifier.citationRoberts, Adam T., Yang, Jian, Reish, Matthew E., et al.. "Plasmonic nanoparticle-based epoxy photocuring: A deeper look." <i>Materials Today,</i> 27, (2019) Elsevier: 14-20. https://doi.org/10.1016/j.mattod.2018.09.005.en_US
dc.identifier.doihttps://doi.org/10.1016/j.mattod.2018.09.005en_US
dc.identifier.urihttps://hdl.handle.net/1911/107369en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsThis is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).en_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.titlePlasmonic nanoparticle-based epoxy photocuring: A deeper looken_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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