Clean and reactive nanostructured cellulose surface

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Österberg, Monika Peresin, Maria S. Johansson, Leena-Sisko Tammelin, Tekla 2017-05-11T08:36:15Z 2017-05-11T08:36:15Z 2013-06
dc.identifier.citation Österberg , M , Peresin , M S , Johansson , L-S & Tammelin , T 2013 , ' Clean and reactive nanostructured cellulose surface ' CELLULOSE , vol 20 , no. 3 , pp. 983-990 . DOI: 10.1007/s10570-013-9920-8 en
dc.identifier.issn 0969-0239
dc.identifier.issn 1572-882X
dc.identifier.other PURE UUID: 883b5c93-1e03-41b4-8bcf-f7ed8d025bff
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE LINK:
dc.identifier.other PURE FILEURL:
dc.description VK: T10402; T10413
dc.description.abstract A simple, solvent-free and low cost method to activate the surface of nanofibrillated cellulose films for further functionalization is presented. The method is based on the oxidative properties of UV radiation and ozone, to effectively remove contaminants from nanocellulosic surface, which remains clean and reactive for at least a week. The efficiency of the method is demonstrated by X-ray photoelectron spectroscopy and contact angle measurements. In clear contrast to previous results on nanoscaled cellulose the relative atomic concentration of non-cellulosic carbon atoms was only 4%, and water completely wetted the surface within seconds. After activation, neither chemical degradation nor morphological changes on cellulose were observed. This surface activation is essential for further functionalization of the film in dry state or nonpolar media. The surface activation was confirmed by silylation and a four times higher degree of substitution was achieved on the activated sample compared to non-activated reference film, as monitored with XPS. en
dc.format.extent 8
dc.format.extent 983-990
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries CELLULOSE en
dc.relation.ispartofseries Volume 20, issue 3 en
dc.rights openAccess en
dc.subject.other 216 Materials engineering en
dc.subject.other 215 Chemical engineering en
dc.title Clean and reactive nanostructured cellulose surface en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Forest Products Technology
dc.subject.keyword Microfibrillated cellulose
dc.subject.keyword Ozonation
dc.subject.keyword Film
dc.subject.keyword Cleaning
dc.subject.keyword UV
dc.subject.keyword 216 Materials engineering
dc.subject.keyword 215 Chemical engineering
dc.identifier.urn URN:NBN:fi:aalto-201705114054
dc.identifier.doi 10.1007/s10570-013-9920-8
dc.type.version acceptedVersion

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