Rodlike Cellulose Whiskers Coated with Surfactant: A Small-Angle Neutron Scattering Characterization
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- 作者：Cé ; line Bonini ; Laurent Heux ; Jean-Yves Cavaillé ; Peter Lindner ; Charles Dewhurst ; and Pierre Terech
- 刊名：Langmuir
- 出版年：2002
- 出版时间：April 16, 2002
- 年：2002
- 卷：18
- 期：8
- 页码：3311 - 3314
- 全文大小：51K
- 年卷期：v.18,no.8(April 16, 2002)
- ISSN：1520-5827
文摘
Apolar organic suspensions of rodlike cellulose whiskers modified by a surfactant are investigated bysmall angle neutron scattering. Guinier and Porod analyses are performed to characterize the increaseof cross-sectional radius of gyration observed between organic and aqueous suspensions of whiskers. Inaddition, a comparison with theoretical curves for fibers with homogeneous rectangular cross sectionsfinally leads to typical cross-sectional dimensions of ca. 120 × 210 Å2 for the modified whiskers in organicsolutions while those in water have 88 × 180 Å2 sizes. It is concluded that the modified whiskers are coatedwith a surfactant layer of 15 Å thickness in a rather folded conformation.