Aggregation of ionic surfactants in formamide

被引：33

作者：

Akhter, MS ^{[1
]}

Alawi, SM ^{[1
]}

机构：

[1] Univ Bahrain, Dept Chem, Isa Town, Bahrain

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2000年 / 173卷 / 1-3期

关键词：

formamide; micelle; critical micelle concentration; conductivity; surface tension;

D O I：

10.1016/S0927-7757(00)00631-2

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：

Electrical conductivity and surface tension measurements of various ionic surfactants, such as sodium caprylate, sodium laurate, sodium palmitate and sodium stearate, in formamide has been determined at 22 degrees C. Both methods show that micelles are formed in formamide solution. Critical micelle concentration (c.m.c.) has been determined for each of the ionic surfactants. It is suggested that amphiphilic self-assembly is a physical process that occurs in formamide and the driving force for aggregation correlates with solvophobicity. The surfactant-solvent interactions that drive amphiphilic self-organization in formamide are discussed. Thermodynamic parameters were evaluated for micellar systems to explain the results. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：95 / 100

页数：6

共 42 条

[1] Effect of acetamide on the critical micelle concentration of aqueous solutions of some surfactants [J].