NONLINEAR RHEOLOGY OF WORMLIKE MICELLES

被引：394

作者：

SPENLEY, NA ^{[1
]}

CATES, ME ^{[1
]}

MCLEISH, TCB ^{[1
]}

机构：

[1] UNIV SHEFFIELD,DEPT PHYS,SHEFFIELD S3 7RH,S YORKSHIRE,ENGLAND

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.71.939

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Certain viscoelastic surfactant solutions show unusual nonlinear rheology: In steady shear, the shear stress saturates to a constant value while the first normal stress increases roughly linearly with shear rate over several decades. Here we explain this behavior in terms of the ''reptation-reaction'' model for the dynamics of reversibly breakable, polymerlike micelles. The constitutive equation for this model leads to a flow instability of shear-banding type. The limiting shear stress is predicted to be sigma* = 0.67G0 (with G0 the plateau modulus), in quantitative agreement with experiment.

引用

页码：939 / 942

页数：4

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