Capillary flow behavior of worm-like micelles studied by small-angle X-ray scattering and small angle light scattering

被引：22

作者：

Castelletto, V. ^{[1
]}

Hamley, I. W. ^{[1
]}

机构：

[1] Univ Reading, Dept Chem, Reading RG6 6AD, Berks, England

来源：

POLYMERS FOR ADVANCED TECHNOLOGIES | 2006年 / 17卷 / 03期

关键词：

micelles; capillary flow; X-ray; light scattering; Pluronic copolymer;

D O I：

10.1002/pat.712

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A novel capillary flow device has been developed and applied to study the orientation of worm-like micelles, among other systems. Small-angle X-ray scattering (SAXS) data from micelles formed by a Pluronic block copolymer in aqueous salt solution provides evidence for the formation of worm-like micelles, which align under flow. A transition from a rod-like form factor to a less persistent conformation is observed under flow. Flow alignment of worm-like micelles formed by the low molar mass amphiphile system cetyl pyridinium chloride+sodium salicylate is studied for comparative purposes. Here, inhomogenous flow at the micron scale is revealed by streaks in the small-angle light scattering pattern perpendicular to the flow direction. Copyright (c) 2006 John Wiley & Sons, Ltd.

引用

页码：137 / 144

页数：8

共 31 条

[11] A small-angle neutron scattering study of spherical and wormlike micelles formed by poly(oxyethylene)-based diblock copolymers [J].