POTENTIOMETRIC TITRATION OF ACRYLAMIDE ACRYLIC-ACID COPOLYMERS - INFLUENCE OF THE CONCENTRATION

被引：14
|
作者：
ELBRAHMI, K [1 ]
RAWISO, M [1 ]
FRANCOIS, J [1 ]
机构：
[1] UNIV STRASBOURG 1,INST CHARLES SADRON,6 RUE BOUSSINGAULT,F-67083 STRASBOURG,FRANCE
来源：
EUROPEAN POLYMER JOURNAL | 1993年 / 29卷 / 12期
关键词：
D O I：
10.1016/0014-3057(93)90242-8
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Potentiometric titrations of acrylamide acrylic acid copolymers of high molecular weight were made at various polymer concentrations. C(p), and ionic strengths, I. At a given pH, the ionization degree of the carboxylate groups is found to increase when C(p) and I increase. In the absence of salt and for a fraction tau of acrylic units in the polymer, the values of pK(a) at different C(p) lie on a single curve as a function of (alphaC(p)-1/3) for a given tau. It is found that pK(a) obtained for the various values of C(p) is a polynomial function of tau1/2 C(p)-1/3.
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收藏
页码：1531 / 1537
页数：7
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