A small-angle X-ray scattering study of the effect of hydration on the microstructure of flax fibers

被引:63
作者
Astley, OM [1 ]
Donald, AM [1 ]
机构
[1] Cavendish Lab, Polymers & Colloids Grp, Cambridge CB3 0HE, England
关键词
D O I
10.1021/bm005643l
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Small-angle X-ray scattering (SAXS) experiments with in situ dehydration have been performed on small bundles of flax fibers. Analysis indicated that the structure of the cellulose microfibrils is consistent with a cross section of approximately 10 x 50 Angstrom(2). The microfibril misalilgnment was Gaussian with a full width at half-maximum of 11-15degrees, dependent on hydration level. A meridional peak at q = 0.095 Angstrom(-1) was observed, possibly for the first time in cellulose I fibers, and this has been attributed to a crystalline/noncrystalline repeat repeat distance of 60-70 Angstrom. It has also been noted that there is considerable change in structure as flax fibers dry from the wet state.
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页码:672 / 680
页数:9
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