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Comparative Study of Monolayer Fatty Acids at the Air/Water Interface

Author(s): Bianca Monica RUS

Journal: Leonardo Electronic Journal of Practices and Technologies
ISSN 1583-1078

Volume: 2;
Issue: 3;
Start page: 111;
Date: 2003;
Original page

Keywords: Fatty Acid Monolayer | Equations of State | Air/water Interface

The behavior of insoluble monolayer of surfactants spread at the air/water interfaces is frequently studied by recording compression isotherms. The compression isotherms given in terms of surface pressure versus mean molecular area are well reproducible for a chosen spreading molecular area of fatty acids, like stearic acid, oleic acid and linoleic acid.Mathematical modeling of these isotherms is performed by means of surface state equations. In the literature, a great variety of such equations have been proposed. In the present paper is made a study of the compression isotherms of oleic acid (OA) monolayer spread at the air /water interface on acidic aqueous solutions (pH = 2).
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