POLYELECTROLYTE BEHAVIOR OF ACRYLONITRILE METHALLYLSULFONATE COPOLYMERS IN DIMETHYLFORMAMIDE

被引：37

作者：

ROCHAS, C

DOMARD, A

RINAUDO, M

机构：

[1] Cen tre de Recherches sur les Macromolécules Végétales 53 X

来源：

POLYMER | 1979年 / 20卷 / 01期

关键词：

D O I：

10.1016/0032-3861(79)90046-6

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The properties in organic solvent (DMF) of two ionic copolymers are investigated and compared to those of polyelectrolytes in aqueous solutions. First, the viscometric behaviour is disccussed: it is demonstrated that [η] varies linearly with C -1 2T, where CT is the ionic concentration of the solution. At infinite salt concentration we obtain data in agreement with unperturbed dimensions. Using isoionic dilution, we deduce øp, the osmotic coefficient. From osmometry, the dependence of øp on the concentration is obtained and compared to the theoretical value. In the presence of neutral salt, the osmotic pressure is determined as a function of salt and polymer concentrations. The results are interpreted in terms of a Donnan equilibrium. © 1979.

引用

页码：76 / 80

页数：5