Abstract
The adsorption isotherms between aqueous solutions of sodium dodecylsulphate and gelatin against air, toluene, or diethylphthalate were determined using the spinning drop method. The results qualitatively and quantitatively agreed with those found by surface tension measurements on sodium dodecylsulphate/gelatin solutions using the ring method in the version of Du Noüy. Interaction between gelatin and the surfactant will yield complexes which are more interfacially active than the components by themselves. The saturation of the interfaces occurs at lower concentrations than in solutions of the single components.
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Wüstneck, R., Wärnheim, T. Interfacial tension of gelatin/sodium dodecylsulphate solutions against air, toluene, and diethylphthalate. Colloid & Polymer Sci 266, 926–929 (1988). https://doi.org/10.1007/BF01410848
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DOI: https://doi.org/10.1007/BF01410848