EMPLOYMENT OF GIBBS-DONNAN-BASED CONCEPTS FOR INTERPRETATION OF THE PROPERTIES OF LINEAR POLYELECTROLYTE SOLUTIONS

被引：12

作者：

MARINSKY, JA

REDDY, MM

机构：

[1] Department of Chemistry, State University of New York at Buffalo, Buffalo

[2] U.S. Geological Survey, Water Resources Division, Denver Federal Center, Denver

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1991年 / 95卷 / 24期

关键词：

D O I：

10.1021/j100177a106

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：

Earlier research has shown that the acid dissociation and metal ion complexation equilibria of linear, weak-acid polyelectrolytes and their cross-linked gel analogues are similarly sensitive to the counterion concentration levels of their solutions. Gibbs-Donnan-based concepts, applicable to the gel, are equally applicable to the linear polyelectrolyte for the accommodation of this sensitivity to ionic strength. This result is presumed to indicate that the linear polyelectrolyte in solution develops counterion-concentrating regions that closely resemble the gel phase of their analogues. Advantage has been taken of this description of linear polyelectrolytes to estimate the solvent uptake by these regions.

引用

页码：10208 / 10214

页数：7

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