Small angle scattering in the Porod region from hydrated paper sheets at varying humidities

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dc.contributor.authorGarvey, CJen_AU
dc.contributor.authorParker, IHen_AU
dc.contributor.authorKnott, RBen_AU
dc.contributor.authorSimon, GPen_AU
dc.date.accessioned2009-07-30T06:30:59Zen_AU
dc.date.accessioned2010-04-30T05:06:40Zen_AU
dc.date.available2009-07-30T06:30:59Zen_AU
dc.date.available2010-04-30T05:06:40Zen_AU
dc.date.issued2004-08en_AU
dc.date.statistics2004-08en_AU
dc.description.abstractThe microscopic changes in the structure of paper at different equilibrium moisture contents were examined using the novel technique of contrast variation small angle neutron scattering (SANS). Contrast variation, by appropriate selection of the H2O:D2O ratio, was used to simplify the scattering from hydrated paper to a twophase approximation. The two phases were paper polymers (cellulose, lignin and hemicelluloses) and a phase consisting of water and voids. The twophase approximation is justified by consideration of the chemistry and density of each of the polymer species belonging to paper, and by matching the scattering length density of the sorbed moisture to air. The neutron intensity at the higher scattering angles examined was successfully fitted using the Porod law, which is applicable to scattering from a twophase system at the high scattering angle limit. This limit is related to the specific surface area between the two phases. The limiting scattered intensity of neutrons was found to increase with increasing moisture content for a range of paper materials. It is concluded that the sorption of water increased the limiting intensity because water disrupted polymerpolymer bonding. The Porod law also predicts the slope of the intensity/scattering angle curve at the high scattering angle limit. © 2004, Walter de Gruyteren_AU
dc.identifier.citationGarvey, C. J., Parker, I. H., Knott, R. B., & Simon, G. P. (2004). Small angle scattering in the Porod region from hydrated paper sheets at varying humidities. Holzforschung, 58(5), 473-479. doi:10.1515/HF.2004.071en_AU
dc.identifier.govdoc1428en_AU
dc.identifier.issn0018-3830en_AU
dc.identifier.issue5en_AU
dc.identifier.journaltitleHolzforschungen_AU
dc.identifier.pagination473-479en_AU
dc.identifier.urihttp://dx.doi.org/10.1515/HF.2004.071en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/1571en_AU
dc.identifier.volume58en_AU
dc.language.isoenen_AU
dc.publisherWalter de Gruyteren_AU
dc.subjectSmall angle scatteringen_AU
dc.subjectHydrationen_AU
dc.subjectHumidityen_AU
dc.subjectMoistureen_AU
dc.subjectBondingen_AU
dc.subjectPaperen_AU
dc.titleSmall angle scattering in the Porod region from hydrated paper sheets at varying humiditiesen_AU
dc.typeJournal Articleen_AU
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