Influence of Chitosan and Grape Seed Extract on Thermal and Mechanical Properties of PLA Blends

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dc.date.accessioned2023-04-27T14:12:53Z
dc.date.available2023-04-27T14:12:53Z
dc.date.issued2023-03-22
dc.description.sponsorshipGefördert durch den Publikationsfonds der Universität Kasselger
dc.identifierdoi:10.17170/kobra-202304277908
dc.identifier.urihttp://hdl.handle.net/123456789/14636
dc.language.isoeng
dc.relation.doidoi:10.3390/polym15061570
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectchitosaneng
dc.subjectPLAeng
dc.subjectgrape seed extracteng
dc.subjectDPPH assayeng
dc.subject.ddc530
dc.subject.ddc540
dc.subject.swdChitosanger
dc.subject.swdVitamin Pger
dc.subject.swdNachhaltigkeitger
dc.subject.swdBiopolymereger
dc.titleInfluence of Chitosan and Grape Seed Extract on Thermal and Mechanical Properties of PLA Blendseng
dc.typeAufsatz
dc.type.versionpublishedVersion
dcterms.abstractBlends based on polylactic acid (PLA), chitosan, and grape seed extract (GE) were prepared by extrusion and injection molding. The effect of chitosan (5% and 15% on PLA basis) and natural extract (1% on PLA basis) incorporated into the PLA host matrix was explored regarding the thermal and mechanical properties. GE showed antioxidant activity, as determined by the DPPH assay method. Chitosan and GE affect the degree of crystallinity up to 30% as the polysaccharide acts as a nucleating agent, while the extract reduces the mobility of PLA chains. The decomposition temperature was mainly affected by adding chitosan, with a reduction of up to 25 °C. The color of the blends was specially modified after the incorporation of both components, obtaining high values of b* and L* after the addition of chitosan, while GE switched to high values of a*. The elongation at break (EB) exhibited that the polysaccharide is mainly responsible for its reduction of around 50%. Slight differences were accessed in tensile strength and Young’s modulus, which were not statistically significant. Blends showed increased irregularities in their surface appearance, as observed by SEM analysis, corresponding to the partial miscibility of both polymers.eng
dcterms.accessRightsopen access
dcterms.creatorGoetjes, Victoria
dcterms.creatorvon Boyneburgk, Claudia Louise
dcterms.creatorHeim, Hans-Peter
dcterms.creatorHorn, Marilia Marta
dcterms.extent12 Seiten
dcterms.source.articlenumber1570
dcterms.source.identifiereissn:2073-4360
dcterms.source.issueIssue 6
dcterms.source.journalPolymerseng
dcterms.source.volumeVolume 15
kup.iskupfalse

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