The effect of acidity on micellization in dodecyldimethylamine oxide-sodium dodecyl sulfate aqueous mixtures

被引：0
|
作者：
E. A. Safonova
M. V. Alexeeva
N. A. Smirnova
机构：
[1] St. Petersburg State University,Department of Chemistry
来源：
Colloid Journal | 2009年 / 71卷
关键词：
Surfactant; Surface Tension; Nonionic Surfactant; Cationic Surfactant; Mixed Micelle;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The effect of acidity on micellization in aqueous solutions of dodecyldimethylamine oxide-sodium dodecyl sulfate mixtures is studied. The CMC values are determined for acidic and nonacidified solutions at 50 °C and different ratios of two surfactants. The measurements are taken using potentiometry, conductometry, and tensiometry techniques. The CMC values are calculated within the framework of a quasi-chemical model of micellization modified with regard to the specific features of the system under consideration. Nonacidified solutions are modeled as a mixture of anionic and nonionic surfactants, whereas acidic solutions are treated as a mixture of anionic and cationic surfactants. The results of model calculations are in satisfactory agreement with the experimental data.
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页码：717 / 724
页数：7
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