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

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dc.contributor.affiliationPontificia Universidad Católica del Perú. Departamento de Ingeniería Mecánica
dc.contributor.authorCarsí, M.
dc.contributor.authorSanchís, M.J.
dc.contributor.authorGómez, C.M.
dc.contributor.authorRodriguez, S.
dc.contributor.authorTorres, F.G.
dc.date.accessioned2026-03-13T16:58:19Z
dc.date.issued2019
dc.description.abstractFilms 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.description.sponsorshipFunding: Acknowledgments: This research was funded by the DGCYT grant number [MAT2015-63955-R] and the Vice-Rectorate for Research of the Pontificia Universidad Católica del Perú and the the Peruvian Science and Technology Program (INNOVATE-PERU) And The APC was funded by MDPI.; Funding text 2: This research was funded by the DGCYT grant number [MAT2015-63955-R] and the Vice-Rectorate for Research of the Pontificia Universidad Cat?lica del Per? and the the Peruvian Science and Technology Program (INNOVATE-PERU) And The APC was funded by MDPI.
dc.identifier.doihttps://doi.org/10.3390/POLYM11061083
dc.identifier.urihttp://hdl.handle.net/20.500.14657/205840
dc.language.isoeng
dc.publisherMDPI
dc.relation.ispartofurn:issn:2073-4360
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.sourcePolymers; Vol. 11, Núm. 6 (2019)
dc.subjectGlass transition
dc.subjectCarrageenan
dc.subjectNanocomposite
dc.subjectMaterials science
dc.subjectRelaxation (psychology)
dc.subjectCasting
dc.subjectMolecular dynamics
dc.subjectChemical engineering
dc.subjectComposite material
dc.subjectChemistry
dc.subjectPolymer
dc.subjectFood science
dc.subjectMedicine
dc.subjectComputational chemistry
dc.subject.ocdehttps://purl.org/pe-repo/ocde/ford#2.05.01
dc.titleEffect of chitin whiskers on the molecular dynamics of carrageenan-based nanocomposites
dc.typehttp://purl.org/coar/resource_type/c_6501
dc.type.otherArtículo
dc.type.versionhttps://vocabularies.coar-repositories.org/version_types/c_970fb48d4fbd8a85/

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