Journal
LANGMUIR
Volume 18, Issue 8, Pages 3311-3314Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la015511t
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Apolar organic suspensions of rodlike cellulose whiskers modified by a surfactant are investigated by small angle neutron scattering. Guinier and Porod analyses are performed to characterize the increase of cross-sectional radius of gyration observed between organic and aqueous suspensions of whiskers. In addition, a comparison with theoretical curves for fibers with homogeneous rectangular cross sections finally leads to typical cross-sectional dimensions of ca. 120 x 210 Angstrom(2) for the modified whiskers in organic solutions while those in water have 88 x 180 Angstrom(2) Sizes. It is concluded that the modified whiskers are coated with a surfactant layer of 15 A thickness in a rather folded conformation.
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