Thermodynamics of Micellization of n-Alkyl Sulfates in an Alkaline Medium at Different Temperatures

JM Ruso; P Taboada; V Mosquera V; F Sarmiento

doi:10.1006/jcis.1999.6198

Thermodynamics of Micellization of n-Alkyl Sulfates in an Alkaline Medium at Different Temperatures

J Colloid Interface Sci. 1999 Jun 15;214(2):292-296. doi: 10.1006/jcis.1999.6198.

Authors

JM Ruso¹, P Taboada, V Mosquera V, F Sarmiento

Affiliation

¹ Departamentos de Física Aplicada y de Física de la Materia Condensada, Universidad de Santiago de Compostela, Santiago de Compostela, E-15706, Spain

PMID: 10339369
DOI: 10.1006/jcis.1999.6198

Abstract

Critical micelle concentrations (cmc) have been calculated from conductivity measurements at 293.15, 298.15, 303.15, 308.15, and 313.15 K for sodium n-decyl sulfate (SDES), sodium n-undecyl sulfate (SUNDS), and sodium n-dodecyl sulfate (SDS) in a medium of pH 10.0 and ionic strength 0.0312. Thermodynamic parameters of micellization, standard Gibbs energies (), standard enthalpies (), and standard entropies (), have been obtained by application of the model of Evans and Ninham in terms of hydrophobic and surface contributions. Copyright 1999 Academic Press.