Investigations on the dissociation behaviour of hydrolyzed alternating copolymers of maleic anhydride and propene .1. Potentiometric titrations

被引：23
|
作者：
Reinhardt, S [1 ]
Steinert, V [1 ]
Werner, K [1 ]
机构：
[1] POLYMER RES INST,D-01069 DRESDEN,GERMANY
来源：
EUROPEAN POLYMER JOURNAL | 1996年 / 32卷 / 08期
关键词：
D O I：
10.1016/0014-3057(96)00028-6
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 potentiometric behaviour of hydrolyzed copolymers of maleic anhydride and propene was studied as a function of added;salt (LiCl, NaCl, KCl, CaCl2). The first and second apparent ionization values pK(a1) and pK(a2) obtained by the classical interpretation were found to depend on the ionic strength and the counterion, respectively. The influence of the two configurations of the succinic moieties causing four dissociation constants is discussed. The effect of added salt was observed to be the greatest in the presence of CaCl2. Hence the addition of CaCl2 enables determination of the concentration of other copolymers of maleic anhydride obtained from the neutralisation of the second carboxylic group. Copyright (C) 1996 Elsevier Science Ltd.
引用
收藏
页码：935 / 938
页数：4
相关论文
共 29 条
123