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Thermodynamics of the hydrophobic effect in surfactant solutions – micellization and adsorption
YKI – Ytkemiska institutet.
1995 (English)In: Pure and Applied Chemistry, ISSN 0033-4545, E-ISSN 1365-3075, Vol. 67, 897-902 p.Article in journal (Refereed)
Abstract [en]

The thermodynamics of surfactant micellization and adsorption onto hydrophobic surfaces are examined. The ideal and the Flory-Huggins approximations for the combinatorial entropy of transfer are contrasted. Two main contributions for the Gibbs free energy of transfer from the aqueous solution to the micelle or the surface are considered. The first is the collapse of the water cavity left behind when the solute is transferred and the second is the destruction of the water structuring around the solute. It is the balance between these two contributions which causes the minimum in critical micelle concentration and the maximum in adsorption of ionic surfactants with temperature. Separation of these two contributions is achieved using a two-state model recently reported for water molecules around non-polar solutes.

Place, publisher, year, edition, pages
1995. Vol. 67, 897-902 p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27447OAI: oai:DiVA.org:ri-27447DiVA: diva2:1054452
Note
A935Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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