Adsorption of sodium octylbenzene-sulfonate at the liquid/air interface |
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| Authors: | R. Knapikowski U. Messow P. Bräuer K. Quitzsch |
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| Affiliation: | (1) Department of Physical and Theoretical Chemistry, University of Leipzig, Linnéstraße 2, 04103 Leipzig, Germany |
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| Abstract: | The surface tensions of aqueous solutions containing sodium octylbenzenesulfonate were measured by means of a processor tensiometer at 20°, 25°, 30° and 35°C. A test for the layer model and thickness of the adsorbed phase is proposed. By means of a linear regression the surfactant area at liquid/air interface was calculated. Finally, the molar-and surface-related thermodynamic functions were discussed. |
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| Keywords: | Thermodynamics of adsorption surface tension surface excess layer model |
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