Shear waves in viscoelastic wormlike micellar fluids

被引：5
|
作者：
Gladden, J. R. [1 ,2 ]
Skelton, C. E. [1 ]
Mobley, J. [1 ,2 ]
机构：
[1] Univ Mississippi, Dept Phys & Astron, University, MS 38677 USA
[2] Univ Mississippi, Natl Ctr Phys Acoust, University, MS 38677 USA
来源：
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2010年 / 128卷 / 05期
关键词：
SURFACTANT MICELLES; DYNAMICS;
D O I：
10.1121/1.3492794
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Low frequency (61 Hz) shear wave speeds have been measured in viscoelastic wormlike micellar (WM) fluids for a concentration range of 20/12-160/96 mM CTAB/NaSAL. The strain induced birefringence of the WM fluids was exploited to optically track the shear pulse using crossed polarizing filters and high speed video. It was found that shear speed increases roughly linearly with concentration at a rate of 3.5 mm s(-1) mM(-1) CTAB. Further, comparison with elastic and loss moduli obtained from rheology data show that shear wave propagation is dominated by the elastic modulus for this frequency range. (C) 2010 Acoustical Society of America
引用
收藏
页码：EL268 / EL273
页数：6
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