Interaction Between Carboxylic Salt and Alcohol from Long Chained Molecules in Mixed Langmuir Monolayers. Relations with Nematic Aggregate Formation in Lyotropic Solutions

H. Hasmonay Laboratoire de Physique des Phases Condensées, Université René Descartes, 45 Rue des Saints-Pères, 75270, Paris Cedex 06, France

A. Hochapfel Laboratoire de Physique des Phases Condensées, Université René Descartes, 45 Rue des Saints-Pères, 75270, Paris Cedex 06, France

M. Boidart Laboratoire de Physique des Phases Condensées, Université René Descartes, 45 Rue des Saints-Pères, 75270, Paris Cedex 06, France

P. Peretti Laboratoire de Physique des Phases Condensées, Université René Descartes, 45 Rue des Saints-Pères, 75270, Paris Cedex 06, France

Abstract

The effect of octadecanol on Langmuir films of potassium docosanoate has been studied. The mixture was chosen in order to modelize the amphiphile interaction in the well known nematic potassium dodecanoate-decanol-water solution. The film study discloses an association between one molecule of the alcohol and one molecule of the soap. The results have been compared with results from the literature. The consequences on the amphiphile packing at the micellar interface are discussed.

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Interaction Between Carboxylic Salt and Alcohol from Long Chained Molecules in Mixed Langmuir Monolayers. Relations with Nematic Aggregate Formation in Lyotropic Solutions

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Interaction Between Carboxylic Salt and Alcohol from Long Chained Molecules in Mixed Langmuir Monolayers. Relations with Nematic Aggregate Formation in Lyotropic Solutions

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