Quantification of accessible hydroxyl groups in cellulosic pulps by dynamic vapor sorption with deuterium exchange

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Väisänen, Saija
dc.contributor.author Pönni, Raili
dc.contributor.author Hämäläinen, Anna
dc.contributor.author Vuorinen, Tapani
dc.date.accessioned 2018-12-10T10:20:30Z
dc.date.available 2018-12-10T10:20:30Z
dc.date.issued 2018-12-01
dc.identifier.citation Väisänen , S , Pönni , R , Hämäläinen , A & Vuorinen , T 2018 , ' Quantification of accessible hydroxyl groups in cellulosic pulps by dynamic vapor sorption with deuterium exchange ' Cellulose , vol. 25 , no. 12 , pp. 6923-6934 . DOI: 10.1007/s10570-018-2064-0 en
dc.identifier.issn 0969-0239
dc.identifier.issn 1572-882X
dc.identifier.other PURE UUID: 729c8565-acc5-4dc7-809c-34d14a890502
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/quantification-of-accessible-hydroxyl-groups-in-cellulosic-pulps-by-dynamic-vapor-sorption-with-deuterium-exchange(729c8565-acc5-4dc7-809c-34d14a890502).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85055929960&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/29701834/CHEM_V_is_nen_et_al_Quantification_Of_Accessible_2018_Cellulose.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/35100
dc.description.abstract Abstract: Dynamic vapor sorption (DVS) coupled with deuterium exchange was applied in determining the amount of hydroxyl (OH) groups accessible for deuteration in pulps and pure cellulose quantitatively. The samples studied with the method were different types of chemical pulps as well as microcrystalline and amorphous cellulose powders. The measurement sequence consisted of drying the samples first until the change in sample mass was less than 0.0005% min−1 followed by rewetting the sample with deuterium oxide (D2O) vapor at set relative humidity (RH) of 95% for 600 min and then drying the sample again the same way as the initial drying was done. The method allows determination of the absolute amount of OH groups accessible to deuterium exchange in the samples fully automatically within 1 day. In addition, the equilibrium moisture contents (EMC) of the samples were measured at RH 95% without prior drying enabling the assessment of the EMC of the samples in as-received state without the need to assess the effect of drying. The accessibilities of chemical pulps were found to vary between 54 and 61% of the theoretical maximum, whereas the accessibilities of microcrystalline cellulose and amorphous cellulose were 51 and 63%, respectively. Interestingly, it was found that the accessible OH group content and the EMC of the samples in mol kg−1 correlated with each other and that, in fact, their ratio was close to one. Graphical abstract: [Figure not available: see fulltext.]. en
dc.format.extent 12
dc.format.extent 6923-6934
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Cellulose en
dc.relation.ispartofseries Volume 25, issue 12 en
dc.rights openAccess en
dc.subject.other Polymers and Plastics en
dc.subject.other 216 Materials engineering en
dc.title Quantification of accessible hydroxyl groups in cellulosic pulps by dynamic vapor sorption with deuterium exchange en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Bioproducts and Biosystems
dc.subject.keyword Accessibility
dc.subject.keyword Cellulose
dc.subject.keyword Deuteration
dc.subject.keyword Dynamic vapor sorption
dc.subject.keyword Equilibrium moisture content
dc.subject.keyword Pulp
dc.subject.keyword Polymers and Plastics
dc.subject.keyword 216 Materials engineering
dc.identifier.urn URN:NBN:fi:aalto-201812106115
dc.identifier.doi 10.1007/s10570-018-2064-0
dc.type.version publishedVersion

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