Thermodynamics of ionic surfactant micelle

A Gibbs-Duhem equation for an ionic surfactant micelle system was derived. The derived Gibbs-Duhem equation took the effect of micelle dispersion and the electrical intermicellar interaction into consideration and assumed the sphericity and monodispersity of micelles. The theoretical consideration i...

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Bibliographic Details
Published inJournal of colloid and interface science Vol. 97; no. 1; pp. 105 - 114
Main Author Akisada, Hideo
Format Journal Article
LanguageEnglish
Published San Diego, CA Elsevier Inc 1984
Elsevier
Subjects
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
micelles
Micelles. Thin films
surfactants
Additive
Dispersion extent
Micellar critical concentration
Interaction
Electrostatic interaction
Theoretical study
Micelle
Equation
Counter ion
Thermodynamic properties
Ionic surfactant
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Summary:A Gibbs-Duhem equation for an ionic surfactant micelle system was derived. The derived Gibbs-Duhem equation took the effect of micelle dispersion and the electrical intermicellar interaction into consideration and assumed the sphericity and monodispersity of micelles. The theoretical consideration is based on the analogy of interfacial thermodynamics and thermodynamics of small systems, leading to an expression of contribution of all components to micelle formation. The analysis of the equation gives the physicochemical meaning of coefficient of added salt effect, the relation between surfactant ion and counterion activities, the relation between CMC (critical micelle concentration) and temperature or pressure, and the composition of mixed-micelle.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0021-9797
1095-7103
DOI:10.1016/0021-9797(84)90278-9