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dc.contributor.authorPantaloni, D
dc.contributor.authorMelelli, A
dc.contributor.authorShah, DU
dc.contributor.authorBaley, C
dc.contributor.authorBourmaud, A
dc.date.accessioned2022-05-11T23:30:35Z
dc.date.available2022-05-11T23:30:35Z
dc.date.issued2022
dc.identifier.issn0141-3910
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/337051
dc.description.abstractFlax fibres are widely used in the automotive sector to reinforce polyolefins, such as for dashboard and interior door panels. A promising option is poly-(lactid) (PLA), as it leads to higher mechanical properties and offers an additional end-of-life scenario following recycling: industrial composting. However, like other composite systems such as flax/polyolefin, flax/PLA composites are also sensitive to water. Here, a non-woven flax/PLA composite is aged under several conditions (50% RH/75% RH/98% RH/Immersion) until saturation. After ageing, all samples are reconditioned at 50% RH, and their residual properties are assessed. The presence of a critical relative humidity between 75% and 98% is highlighted, above which, increases in moisture content irreversibly decrease the composite’s mechanical properties. After ageing at 98% RH and in immersion, tangent modulus was reduced by 23.0 and 33.8% and ultimate strength by 26.7 and 37.4%, respectively, compared to reference materials. This decrease is mainly due to microstructure evolution in the form of increasing porosity. This microstructure evolution is induced by the swelling of flax fibres, which generates high local stresses, above what PLA can withstand. As a result, micro-cracks appear in the matrix, responsible for reduction in mechanical properties.
dc.description.sponsorshipThe authors want to thank the INTERREG IV Cross Channel programme for funding this work through the FLOWER project (Grant number 23).
dc.publisherElsevier BV
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectBiocomposites
dc.subjectFlax fibres
dc.subjectNon-woven
dc.subjectDegradation
dc.subjectMicrostructure
dc.subjectMoisture
dc.titleInfluence of water ageing on the mechanical properties of flax/PLA non-woven composites
dc.typeArticle
dc.publisher.departmentFaculty of Architecture And History of Art
dc.date.updated2022-05-10T15:45:40Z
prism.publicationNamePolymer Degradation and Stability
dc.identifier.doi10.17863/CAM.84474
dcterms.dateAccepted2022-04-24
rioxxterms.versionofrecord10.1016/j.polymdegradstab.2022.109957
rioxxterms.versionAM
dc.contributor.orcidShah, DU [0000-0002-8078-6802]
dc.contributor.orcidBaley, C [0000-0003-1139-7130]
dc.identifier.eissn1873-2321
rioxxterms.typeJournal Article/Review
cam.issuedOnline2022-04-26
cam.orpheus.success2022-05-11 - Embargo set during processing via Fast-track
cam.depositDate2022-05-10
pubs.licence-identifierapollo-deposit-licence-2-1
pubs.licence-display-nameApollo Repository Deposit Licence Agreement
rioxxterms.freetoread.startdate2023-04-26


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Attribution-NonCommercial-NoDerivatives 4.0 International
Except where otherwise noted, this item's licence is described as Attribution-NonCommercial-NoDerivatives 4.0 International