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Hydrothermally induced changes in the properties of MFC and characterization of the low molar mass degradation products

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Hiltunen, Salla
dc.contributor.author Koljonen, Krista
dc.contributor.author Niemelä, Klaus
dc.contributor.author Heiskanen, Isto
dc.contributor.author Johansson, Leena Sisko
dc.contributor.author Backfolk, Kaj
dc.date.accessioned 2019-08-15T08:23:29Z
dc.date.available 2019-08-15T08:23:29Z
dc.date.issued 2019-11-01
dc.identifier.citation Hiltunen , S , Koljonen , K , Niemelä , K , Heiskanen , I , Johansson , L S & Backfolk , K 2019 , ' Hydrothermally induced changes in the properties of MFC and characterization of the low molar mass degradation products ' , Cellulose , vol. 26 , no. 16 , pp. 8589-8605 . https://doi.org/10.1007/s10570-019-02603-w en
dc.identifier.issn 0969-0239
dc.identifier.issn 1572-882X
dc.identifier.other PURE UUID: 5beee4ab-aa2e-4acd-b75f-1c6dbaf93ac8
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/5beee4ab-aa2e-4acd-b75f-1c6dbaf93ac8
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85069441944&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/35738055/CHEM_Hiltunen_et_al_Hydrothermally_Induced_Changes_2019_Cellulose.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/39678
dc.description.abstract The aim of this study was to determine hydrothermally induced changes in the physico-chemical properties of a fine microfibrillated cellulose (MFC). The MFC was prepared from a monocomponent endoglucanase-treated never-dried birch kraft pulp which had been run several times through a microfluidizer in order to obtain a sample substantially free from fibers or fiber fragments. The fine MFC was subjected to hydrothermal treatment at 150∘C for 0.5, 2.5, 4.5, 8.5 and 20.5 h, after which the viscosity, water-retention capacity, surface charge, discoloration and formation of hydrolysis products were determined. The viscosity, surface charge and water-retention capacity of MFC decreased as a result of the treatment but in oscillatory measurements the storage and loss moduli increased. Hydrothermal treatment also caused discoloration of the sample which could not be fully washed away with water. Surface analysis with XPS revealed no significant changes in the surface structure of the dried MFC cakes but the filtratesafter the hydrothermal treatment were complex mixtures of sugars, organic acids and furans. The main degradation products detected were xylose and xylobiose, but isomerization products of sugars (xylulose, fructose) were also found in the filtrates. In addition numerous organic acids, including formic, glycolic, lactic and xylonic acid, were identified in the filtrates, showing that both acid and alkaline catalyzed reactions occur due to dissociation of water into H + and OH -. en
dc.format.extent 17
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher SPRINGER
dc.relation.ispartofseries Cellulose en
dc.rights openAccess en
dc.title Hydrothermally induced changes in the properties of MFC and characterization of the low molar mass degradation products en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department LUT University
dc.contributor.department VTT Technical Research Centre of Finland
dc.contributor.department Stora Enso
dc.contributor.department Department of Bioproducts and Biosystems
dc.subject.keyword Degradation
dc.subject.keyword Hydrolysis
dc.subject.keyword Hydrothermal treatment
dc.subject.keyword Microfibrillated cellulose
dc.identifier.urn URN:NBN:fi:aalto-201908154723
dc.identifier.doi 10.1007/s10570-019-02603-w
dc.type.version publishedVersion

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