Thermal parameters associated to micellization of dodecylpyridinium bromide and chloride in aqueous solution

被引：30

作者：

Galán, J ^{[1
]}

González-Pérez, A ^{[1
]}

Del Castillo, JL ^{[1
]}

Rodríguez, JR ^{[1
]}

机构：

[1] Univ Santiago de Compostela, Fac Fis, Dept Fis Mat Condensada, Grp Ciencia & Tecnol Coloides, E-15706 Santiago De Compostela, Spain

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2002年 / 70卷 / 01期

关键词：

conductivity; critical micelle concentration; dodecylpyridinium chloride and bromide; enthalpy; entropy and standard Gibbs free energy; temperature dependence;

D O I：

10.1023/A:1020678222376

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Electrical conductivity of aqueous solutions of dodecylpyridinium chloride and bromide have been determined. From these data the critical micelle concentration (cmc) was determined. The thermal properties as standard Gibbs free energy, enthalpy and entropy of micellization was estimated from a uncharged-phase separation model and enables to obtain another properties like heat capacity of micellization and the relevant parameters in the minimum of temperature dependence of cmc. The enthalpy-entropy compensation was shown for the studied compounds.

引用

页码：229 / 233

页数：5

共 14 条

[1]

PARTIAL MOLAL VOLUME CHANGES DURING MICELLIZATION AND SOLUTION OF NONIONIC SURFACTANTS AND PERFLUOROCARBOXYLATES USING A MAGNETIC DENSITY BALANCE [J].