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Birch wood pre-hydrolysis vs pulp post-hydrolysis for the production of xylan-based compounds and cellulose for viscose application

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Borrega, Marc
dc.contributor.author Larsson, Per Tomas
dc.contributor.author Ahvenainen, Patrik
dc.contributor.author Ceccherini, Sara
dc.contributor.author Maloney, Thaddeus
dc.contributor.author Rautkari, Lauri
dc.contributor.author Sixta, Herbert
dc.date.accessioned 2018-05-22T14:52:26Z
dc.date.available 2018-05-22T14:52:26Z
dc.date.issued 2018-06-15
dc.identifier.citation Borrega , M , Larsson , P T , Ahvenainen , P , Ceccherini , S , Maloney , T , Rautkari , L & Sixta , H 2018 , ' Birch wood pre-hydrolysis vs pulp post-hydrolysis for the production of xylan-based compounds and cellulose for viscose application ' Carbohydrate Polymers , vol 190 , pp. 212-221 . DOI: 10.1016/j.carbpol.2018.02.064 en
dc.identifier.issn 0144-8617
dc.identifier.issn 1879-1344
dc.identifier.other PURE UUID: f0524855-3cf7-428b-afe0-e852f6eda7c3
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/birch-wood-prehydrolysis-vs-pulp-posthydrolysis-for-the-production-of-xylanbased-compounds-and-cellulose-for-viscose-application(f0524855-3cf7-428b-afe0-e852f6eda7c3).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85042777891&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/20722606/Borrega_et_al_Birch_wood_2018_Carbohydrate_Polymers.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/31255
dc.description.abstract Hydrothermal treatments of birch wood and kraft pulp were compared for their ability to extract the xylan and produce viscose-grade pulp. Water post-hydrolysis of kraft pulp produced a high-purity cellulosic pulp with lower viscosity but higher cellulose yield than traditional pre-hydrolysis kraft pulping of wood. Post-hydrolysis of pulp also increased the crystallite dimensions and degree of crystallinity in cellulose, and promoted a higher extent of fibril aggregation. The lower specific surface area in post-hydrolyzed pulps, derived from their larger fibril aggregates, decreased the accessibility of –OH groups. However, this lower accessibility did not seem to decrease the pulp reactivity to derivatizing chemicals. In the aqueous side-stream, the xylose yield was similar in both pre- and post-hydrolysates, although conducting post-hydrolysis of pulp in a flow-through system enabled the recovery of high purity and molar mass (∼10 kDa) xylan for high-value applications. en
dc.format.extent 10
dc.format.extent 212-221
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Carbohydrate Polymers en
dc.relation.ispartofseries Volume 190 en
dc.rights openAccess en
dc.subject.other Organic Chemistry en
dc.subject.other Polymers and Plastics en
dc.subject.other Materials Chemistry en
dc.subject.other 216 Materials engineering en
dc.title Birch wood pre-hydrolysis vs pulp post-hydrolysis for the production of xylan-based compounds and cellulose for viscose application en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Forest Products Technology
dc.contributor.department RISE Bioeconomy
dc.contributor.department University of Helsinki
dc.contributor.department Department of Bioproducts and Biosystems
dc.subject.keyword Cellulose
dc.subject.keyword Dissolving pulp
dc.subject.keyword Hydrothermal treatment
dc.subject.keyword Viscose
dc.subject.keyword Xylan
dc.subject.keyword Organic Chemistry
dc.subject.keyword Polymers and Plastics
dc.subject.keyword Materials Chemistry
dc.subject.keyword 216 Materials engineering
dc.identifier.urn URN:NBN:fi:aalto-201805222695
dc.identifier.doi 10.1016/j.carbpol.2018.02.064
dc.date.embargo info:eu-repo/date/embargoEnd/2019-02-25

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