Dynamics of flocculated emulsions

被引：21

作者：

Pal, R

机构：

[1] Department of Chemical Engineering, University of Waterloo, Waterloo

来源：

CHEMICAL ENGINEERING SCIENCE | 1997年 / 52卷 / 07期

基金：

加拿大自然科学与工程研究理事会;

关键词：

flocculation; rheology; emulsions; water-in-oil; surfactant;

D O I：

10.1016/S0009-2509(96)00451-4

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The steady, oscillatory, and creep/recovery behaviours of flocculated water-in-oil emulsions are investigated with a cone-and-plate system, using a controlled-stress rheometer. The effects of surfactant and dispersed-phase (water) concentrations on the rheological behaviour of emulsions are determined. In the presence of excess surfactant in the dispersion medium (oil), the emulsions undergo severe flocculation. The flocculated emulsions are found to be highly shear thinning and viscoelastic in character. The degree of shear thinning and viscoelasticity in emulsions decreases with the decrease in surfactant and water concentrations. (C) 1997 Elsevier Science Ltd.

引用

页码：1177 / 1187

页数：11

共 10 条

[1] FLOCCULATION OF EMULSIONS BY FREE SURFACTANT IN PURIFIED SYSTEMS [J].