Role of the solvophobic effect on micellization

被引：93

作者：

Moya, Maria Luisa ^{[1
]}

Rodriguez, Amalia ^{[1
]}

Graciani, Maria del Mar ^{[1
]}

Fernandez, Gaspar ^{[1
]}

机构：

[1] Univ Seville, Dept Quim Fis, Seville 41012, Spain

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2007年 / 316卷 / 02期

关键词：

micellization; solvophobic effect; water-organic solvent mixtures; polarity; cohesive energy density; solubility parameter;

D O I：

10.1016/j.jcis.2007.07.035

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：

Experimental data of amphiphiles aggregation phenomena in water-organic solvent mixtures were considered with the idea of investigating the role of the solvophobic effect on micellization. Changes in the critical micelle concentration, in the micellar ionization degree (for ionic surfactants) and in the aggregation number accompanying variations in the composition of the bulk phase of the micellar solutions were examined with the scope of understanding which properties of the water-organic solvent mixtures are important in the micellization process. Results point out that the cohesive energy density, measured either through the Hildebrand-Hansen solubility parameter or the Gordon parameter, seems to play an important role in determining the contribution of the solvophobic effect on the Gibbs energy of micellization in water-organic solvents mixtures. (C) 2007 Elsevier Inc. All rights reserved.

引用

页码：787 / 795

页数：9

共 60 条

[1]

AGUIAR J, 2005, J COLLOID INTERF SCI, V255, P385

[2] Effects of head group size on micellization of cetyltrialkylammonium bromide surfactants in water-ethylene glycol mixtures [J].