Crossover Behavior of the Viscosity of Dilute and Semidilute Polyelectrolyte Solutions

被引：13
|
作者：
Ashok, B.
Muthukumar, M. [1 ]
机构：
[1] Univ Massachusetts, Mat Res Sci & Engn Ctr, Dept Phys, Amherst, MA 01003 USA
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2009年 / 113卷 / 17期
基金：
美国国家科学基金会;
关键词：
SPHERE HYDRODYNAMIC INTERACTIONS; MOLECULAR-WEIGHT RELATIONSHIP; IONIC POLYMER LATTICES; INTRINSIC-VISCOSITY; CONCENTRATED SUSPENSION; CONCENTRATION-DEPENDENCE; INTERACTING SPHERES; HUGGINS COEFFICIENT; SHEAR VISCOSITY; CLUSTER THEORY;
D O I：
10.1021/jp8080589
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We present theoretical results to describe the crossover behavior of the viscosity of dilute and semidilute polyelectrolyte solutions. We have resolved the puzzle of the experimentally observed nonmonotonic dependence of the reduced viscosity of polyelectrolyte solutions on the polymer concentration below the entanglement limit. We use a combination of the theory of triple screening of excluded volume, electrostatic, and hydrodynamic interactions in polyelectrolyte solutions and a thermodynamic theory of interchain interactions in obtaining the crossover formulas. The calculated results are in qualitative agreement with data in the experimental literature.
引用
收藏
页码：5736 / 5745
页数：10
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