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dc.contributor.authorSingh, Shikha
dc.contributor.authorMaspoch Rulduà, M. Lluïsa
dc.contributor.otherUniversitat Politècnica de Catalunya. Doctorat Erasmus Mundus en Ciència i Enginyeria de Materials Avançats
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència i Enginyeria de Materials
dc.date.accessioned2021-03-03T15:30:50Z
dc.date.available2021-03-03T15:30:50Z
dc.date.issued2020-03-01
dc.identifier.citationSingh, S.; Maspoch, M. Effect of chitin nanocrystals on crystallization and properties of poly(lactic acid)-based nanocomposites. "Polymers", 1 Març 2020, vol. 12, núm. 3, p. 726:1-726:17.
dc.identifier.issn2073-4360
dc.identifier.urihttp://hdl.handle.net/2117/340883
dc.description.abstractThe crystalline phase of poly(lactic acid) (PLA) has crucial effects on its own properties and nanocomposites. In this study, the isothermal crystallization of PLA, triethyl citrate-plasticized PLA (PLA–TEC), and its nanocomposite with chitin nanocrystals (PLA–TEC–ChNC) at different temperatures and times was investigated, and the resulting properties of the materials were characterized. Both PLA and PLA–TEC showed extremely low crystallinity at isothermal temperatures of 135, 130, 125 °C and times of 5 or 15 min. In contrast, the addition of 1 wt % of ChNCs significantly improved the crystallinity of PLA under the same conditions owing to the nucleation effect of the ChNCs. The samples were also crystallized at 110 °C to reach their maximal crystallinity, and PLA–TEC–ChNC achieved 48% crystallinity within 5 min, while PLA and PLA–TEC required 40 min to reach a similar level. Moreover, X-ray diffraction analysis showed that the addition of ChNCs resulted in smaller crystallite sizes, which further influenced the barrier properties and hydrolytic degradation of the PLA. The nanocomposites had considerably lower barrier properties and underwent faster degradation compared to PLA–TEC110. These results confirm that the addition of ChNCs in PLA leads to promising properties for packaging applications.
dc.language.isoeng
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subject.lcshNanocomposites (Materials)
dc.subject.lcshNanocrystals
dc.subject.otherPoly(lactic acid)
dc.subject.otherChitin nanocrystals
dc.subject.otherNanocomposites
dc.subject.otherLiquid-assisted extrusion
dc.subject.otherCrystallinity
dc.subject.otherBarrier properties
dc.subject.otherHydrolytic degradation
dc.titleEffect of chitin nanocrystals on crystallization and properties of poly(lactic acid)-based nanocomposites
dc.typeArticle
dc.subject.lemacNanocompòsits (Materials)
dc.subject.lemacNanocristalls
dc.contributor.groupUniversitat Politècnica de Catalunya. e-PLASCOM - Plàstics i Compòsits Ecològics
dc.identifier.doi10.3390/polym12030726
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://www.mdpi.com/2073-4360/12/3/726
dc.rights.accessOpen Access
local.identifier.drac28794261
dc.description.versionPostprint (published version)
local.citation.authorSingh, S.; Maspoch, M.
local.citation.publicationNamePolymers
local.citation.volume12
local.citation.number3
local.citation.startingPage726:1
local.citation.endingPage726:17


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