Effect of chitin whiskers on the molecular dynamics of carrageenan-based nanocomposites
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Effect of chitin whiskers on the molecular dynamics of carrageenan-based nanocomposites

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Effect of chitin whiskers on the molecular dynamics of carrageenan-based nanocomposites

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dc.contributor.author Carsi, Marta
dc.contributor.author Sanchís, María J.
dc.contributor.author Gómez Clarí, Mª Clara
dc.contributor.author Rodriguez, Sol
dc.contributor.author Torres, Fernando G.
dc.date.accessioned 2020-05-07T07:57:56Z
dc.date.available 2020-05-07T07:57:56Z
dc.date.issued 2019
dc.identifier.uri https://hdl.handle.net/10550/74466
dc.description.abstract Films of carrageenan (KC) and glycerol (g) with different contents of chitin nanowhiskers (CHW) were prepared by a solution casting process. The molecular dynamics of pure carrageenan (KC), carrageenan/glycerol (KCg) and KCg with different quantities of CHWs as a filler was studied using dielectric relaxation spectroscopy. The analysis of the CHW effect on the molecular mobility at the glass transition, Tg, indicates that non-attractive intermolecular interactions between KCg and CHW occur. The fragility index increased upon CHW incorporation, due to a reduction in the polymer chains mobility produced by the CHW confinement of the KCg network. The apparent activation energy associated with the relaxation dynamics of the chains at Tg slightly increased with the CHW content. The filler nature effect, CHW or montmorillonite (MMT), on the dynamic mobility of the composites was analyzed by comparing the dynamic behavior of both carrageenan-based composites (KCg/xCHW, KCg/xMMT).
dc.language.iso eng
dc.relation.ispartof Polymers, 2019, vol. 11, p. 1083-1-1083-16
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Carsi, Marta Sanchís, María J. Gómez Clarí, Mª Clara Rodriguez, Sol Torres, Fernando G. 2019 Effect of chitin whiskers on the molecular dynamics of carrageenan-based nanocomposites Polymers 11 1083-1 1083-16
dc.subject Ciència dels materials
dc.subject Biomolècules
dc.title Effect of chitin whiskers on the molecular dynamics of carrageenan-based nanocomposites
dc.type info:eu-repo/semantics/article
dc.date.updated 2020-05-07T07:57:57Z
dc.identifier.doi https://doi.org/10.3390/polym11061083
dc.identifier.idgrec 138812

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