Bilayer in a Liquid Self-Supported FilmClick to copy article linkArticle link copied!
Abstract
The drainage of vertical soap films formed from nonionic surfactant solutions of pentaethylene glycol monododecyl ether (C12E5) was studied using Fourier transform infrared spectroscopy. At relatively low surfactant concentrations in the bulk solution (but above the critical micelle concentration), a transient surfactant bilayer was observed within these soap films. The expulsion of water and of a surfactant bilayer from the film was followed as a function of time. The bilayer found within the film displayed a much higher degree of molecular order than the two outer monolayers of the soap film. This study can serve as a model for similar studies on biomembranes.
*
To whom correspondence should be addressed. Present address: Netherlands Forensic Institute, Ministry of Justice, P.O. Box 3110, 2280 GC Rijswijk, The Netherlands.
†
Centre de Physique Moléculaire Optique et Hertzienne, CNRS UMR 5798, Université Bordeaux I.
‡
Laboratoire de Physique, CNRS UMR 5672, Ecole Normale Supérieure de Lyon.
§
Laboratoire de Physico-Chimie Moléculaire, CNRS UMR 5803, Université Bordeaux I.
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