STRETCHED-EXPONENTIAL RELAXATION OF ELECTRIC BIREFRINGENCE IN POLYMER-SOLUTIONS

被引：53

作者：

DEGIORGIO, V ^{[1
]}

BELLINI, T ^{[1
]}

PIAZZA, R ^{[1
]}

MANTEGAZZA, F ^{[1
]}

GOLDSTEIN, RE ^{[1
]}

机构：

[1] UNIV CHICAGO,RES INST,CHICAGO,IL 60637

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 64卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.64.1043

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The relaxation of electric birefringence in dilute solutions of a polyelectrolyte is shown to be consistent with a stretched-exponential form, exp[-(t)±]. The exponent ± depends on polymer length L and solvent ionic strength only through the ratio x==L/Lp, where Lp is the persistence length, and crosses over from ±1 for stiff chains (x1) to ±0.44±0.02 in the self-avoiding-walk regime x1, the latter in accord with a simple scaling theory of polymer statistics and dynamics. © 1990 The American Physical Society.

引用

页码：1043 / 1046

页数：4

共 21 条

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