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Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Chen, Feng
dc.contributor.author Sawada, Daisuke
dc.contributor.author Hummel, Michael
dc.contributor.author Sixta, Herbert
dc.contributor.author Budtova, Tatiana
dc.date.accessioned 2020-06-25T08:40:35Z
dc.date.available 2020-06-25T08:40:35Z
dc.date.issued 2020-05-01
dc.identifier.citation Chen , F , Sawada , D , Hummel , M , Sixta , H & Budtova , T 2020 , ' Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid ' , Polymers , vol. 12 , no. 5 , 1010 , pp. 1-13 . https://doi.org/10.3390/polym12051010 en
dc.identifier.issn 2073-4360
dc.identifier.other PURE UUID: 9748bc72-58b8-4fd4-80cf-e9fcc185a528
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/unidirectional-allcellulose-composites-from-flax-via-controlled-impregnation-with-ionic-liquid(9748bc72-58b8-4fd4-80cf-e9fcc185a528).html
dc.identifier.other PURE LINK: https://www.researchgate.net/publication/341019163_Unidirectional_All-Cellulose_Composites_from_Flax_via_Controlled_Impregnation_with_Ionic_Liquid?_sg=O-IdDunswsW6eAdwaMNdIpNBEhwaToOriCOdH4Va-j9kZFQ4kWLFDPXoZGIPNz6uOIkyDVU91WwwHdmZViCFDiQdjWtKTyV0PjManC-a.4UqgvwCeGK6Hzq_krZBNRe6mQLrE2boREculg5K17oZ4V7qfmyPUNLGxlD7jh7HpsPdsfVKqXjRjGK8zzFfRDg
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85085244380&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/43423428/polymers_12_01010.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/45176
dc.description.abstract Mechanically strong all-cellulose composites are very attractive in the terms of fully bio-based and bio-degradable materials. Unidirectional flax-based all-cellulose composites are prepared via facile room-temperature impregnation with an ionic liquid, 1-ethyl-3-methyl imidazolium acetate. To determine the optimal processing conditions, the kinetics of flax dissolution in this solvent is first studied using optical microscopy. Composite morphology, crystallinity, density, the volume fraction of cellulose II and tensile properties are investigated, indicating that flax dissolution should be within certain limits. On the one hand, the amount of cellulose II formed through dissolution and coagulation should be high enough to “fuse” flax fibers, resulting in a density increase. On the other hand, only the surface layer of the fibers should be dissolved to maintain the strength provided by the inner secondary layer and avoid a detrimental decrease in crystallinity. The highest Young’s modulus and strength, 10.1 GPa and 151.3 MPa, respectively, are obtained with a crystallinity of 43% and 20 vol% of cellulose II. en
dc.format.extent 13
dc.format.extent 1-13
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher MDPI AG
dc.relation.ispartofseries Polymers en
dc.relation.ispartofseries Volume 12, issue 5 en
dc.rights openAccess en
dc.subject.other Chemistry(all) en
dc.subject.other Polymers and Plastics en
dc.subject.other 216 Materials engineering en
dc.title Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Bioproducts and Biosystems
dc.contributor.department Biopolymer Chemistry and Engineering
dc.contributor.department Biorefineries
dc.contributor.department Department of Bioproducts and Biosystems en
dc.subject.keyword natural fibers
dc.subject.keyword ionic liquid
dc.subject.keyword composites
dc.subject.keyword mechanical properties
dc.subject.keyword structure-property correlations
dc.subject.keyword Chemistry(all)
dc.subject.keyword Polymers and Plastics
dc.subject.keyword 216 Materials engineering
dc.identifier.urn URN:NBN:fi:aalto-202006254133
dc.identifier.doi 10.3390/polym12051010
dc.type.version publishedVersion

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