FLOW BIREFRINGENCE EXPERIMENTS SHOWING A SHEAR-BANDING STRUCTURE IN A CTAB SOLUTION

被引：125

作者：

DECRUPPE, JP

CRESSELY, R

MAKHLOUFI, R

CAPPELAERE, E

机构：

[1] Laboratoire de Physique des Liquides et des Interfaces Groupe Physique des Colloïdes, et Polymères, Université de Metz, Metz, 57070

来源：

COLLOID AND POLYMER SCIENCE | 1995年 / 273卷 / 04期

关键词：

CETYLTRIMETHYLAMMONIUM BROMIDE (CTAB); SHEAR-INDUCED STRUCTURES; FLOW BIREFRINGENCE MICELLES;

D O I：

10.1007/BF00652348

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Experiments of flow birefringence have been performed on a concentrated solution of CTAB submitted to shear in a Couette cell. Qualitative observations of the flow in the annular gap of the Couette device let us clearly see that the flow is divided into two layers when the shear rate exceeds a critical value. This shear banding structure is shown on a set of photographs. The extinction angle chi and the retardation phi were measured as a function of the shear rate gamma for different temperatures. The results are in agreement with the predictions of the shear banding theory.

引用

页码：346 / 351

页数：6

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