Small-angle scattering model for efficient characterization of wood nanostructure and moisture behaviour

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorPenttilä, Paavo A.
dc.contributor.authorRautkari, Lauri
dc.contributor.authorÖsterberg, Monika
dc.contributor.authorSchweins, Ralf
dc.contributor.departmentDepartment of Bioproducts and Biosystems
dc.contributor.departmentInstitut Laue-Langevin
dc.date.accessioned2019-05-06T09:14:08Z
dc.date.available2019-05-06T09:14:08Z
dc.date.issued2019-03-26
dc.description.abstractSmall-angle scattering methods allow an efficient characterization of the hierarchical structure of wood and other cellulosic materials. However, their full utilization would require an analytical model to fit the experimental data. This contribution presents a small-angle scattering model tailored to the analysis of wood samples. The model is based on infinitely long cylinders packed in a hexagonal array with paracrystalline distortion, adapted to the particular purpose of modelling the packing of cellulose microfibrils in the secondary cell wall of wood. The new model has been validated with small-angle neutron and X-ray scattering data from real wood samples at various moisture contents. The model yields reasonable numerical values for the microfibril diameter (2.1–2.5 nm) and packing distance (4 and 3 nm in wet and dry states, respectively) and comparable results between the two methods. It is particularly applicable to wet wood samples and allows changes in the packing of cellulose microfibrils to be followed as a function of moisture content.en
dc.description.versionPeer revieweden
dc.format.extent9
dc.format.extent369-377
dc.format.mimetypeapplication/pdf
dc.identifier.citationPenttilä , P A , Rautkari , L , Österberg , M & Schweins , R 2019 , ' Small-angle scattering model for efficient characterization of wood nanostructure and moisture behaviour ' , Journal of Applied Crystallography , vol. 52 , no. 2 , pp. 369-377 . https://doi.org/10.1107/S1600576719002012en
dc.identifier.doi10.1107/S1600576719002012
dc.identifier.issn0021-8898
dc.identifier.otherPURE UUID: 7192e2df-1676-45df-b608-e68d04f4db88
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/7192e2df-1676-45df-b608-e68d04f4db88
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85063570816&partnerID=8YFLogxK
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/33061570/CHEM_Penttil_PA_et_al_Small_angle_Scattering_2019_J.Appl.Cryst.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/37694
dc.identifier.urnURN:NBN:fi:aalto-201905062814
dc.language.isoenen
dc.publisherInternational Union of Crystallography
dc.relation.ispartofseriesJournal of Applied Crystallographyen
dc.relation.ispartofseriesVolume 52, issue 2en
dc.rightsopenAccessen
dc.subject.keywordcellulose
dc.subject.keywordmoisture behaviour
dc.subject.keywordsmall-angle scattering
dc.subject.keywordstructural characterization
dc.subject.keywordwood
dc.titleSmall-angle scattering model for efficient characterization of wood nanostructure and moisture behaviouren
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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