Interaction between cetyl pyridinium chloride and water-soluble polymers in aqueous solutions

被引：52

作者：

GarciaMateos, I ^{[1
]}

Perez, S ^{[1
]}

Velazquez, MM ^{[1
]}

机构：

[1] UNIV SALAMANCA,FAC FARM,DEPT QUIM FIS,E-37080 SALAMANCA,SPAIN

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 1997年 / 194卷 / 02期

关键词：

cetyl pyridinium chloride; poly(vinylpyrrolidone); poly(ethyleneglycol); pyrene; 1-carboxaldehyde; polymer-surfactant interaction; electrical conductivity; fluorescence probing;

D O I：

10.1006/jcis.1997.5114

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：

The interaction between cetyl pyridinium chloride and different-molecular-weight poly(vinylpyrrolidone) (PVP) and poly(ethylene glycol) (PEG) polymers has been investigated by means of electrical conductivity and fluorescence probing. No interaction between the low-molecular-weight PVP polymers and the surfactant was detected, whereas a significant interaction was observed between high-molecular-weight PVP polymers or PEG polymers and cetyl pyridinium chloride. The results indicate that polymer-surfactant aggregates start to form at a surfactant concentration higher than the critical micelle concentration of micelles without polymers. In contrast, the degree of ionization and the interface polarity decrease as compared with values of micelles without polymers. The Gibbs free energy associated with the interaction was also calculated. The values show that the addition of polymers stabilizes polymer-surfactant aggregates. (C) 1997 Academic Press.

引用

页码：356 / 363

页数：8

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