✦ LIBER ✦

Phase Transition Processes in Surfactant Adsorption Layers

✍ Scribed by Valentin B. Fainerman; Reinhard Miller

Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 120 KB
Volume: 232
Category: Article
ISSN: 0021-9797
DOI: 10.1006/jcis.2000.7213

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✦ Synopsis

Adsorption data in the form of surface tension vs bulk concentration isotherms having strong changes in the slope have often been discussed in the literature in terms of phase transitions in the adsorption layer. It will be shown thermodynamically that these apparent kink points in the isotherms are unreal. A phase transition would cause a completely opposite change in the isotherm. Experimental surface tension data for sodium octanoate and dodecyl ammonium chloride obtained from the literature are reinterpreted on the basis of the Frumkin and reorientation isotherms.

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