Surfactant curvilinear diffusion in giant wormlike micelles

被引：48
|
作者：
Angelico, R
Olsson, U
Palazzo, G
Ceglie, A
机构：
[1] Lund Univ, Ctr Chem & Chem Engn, S-22100 Lund, Sweden
[2] Univ Bari, Dipartmento Chim, I-70126 Bari, Italy
[3] Univ Molise, DISTAAM, I-86100 Campobasso, Italy
来源：
PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 13期
关键词：
D O I：
10.1103/PhysRevLett.81.2823
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present the first experimental measurements of surfactant curvilinear diffusion in giant wormlike micelles. The surfactant diffusion was monitored by pulsed field gradient NMR for various observation times t ranging from 0.020 to 1.5 s. The surfactant mean-square displacement was found to scale as t(1/2). A model of lateral diffusion along wormlike micellar aggregates with Gaussian statistics is found to describe the echo attenuation well. This type of diffusion is analogous to polymer segment diffusion in the tube-reptation model.
引用
收藏
页码：2823 / 2826
页数：4
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