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Issue 6, 1986
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Mixed adsorption of a non-ionic and an anionic surfactant at the carbon–aqueous solution interface

Michael J. Hey,  John W. Mactaggart  and  Colin H. Rochester 

Abstract

Adsorption from mixed aqueous solutions of sodium dodecyl sulphate and O-n-octyltetraethylene glycol on to graphitised carbon has been determined by solution depletion. A decrease in total adsorption was found in comparison with the amount expected from isotherms for separately adsorbed surfactants. An extension of the Rubingh theory for mixed-micelle formation is proposed to allow deviations from non-ideal mixing in the adsorbed layer to be specified. Application of the theory indicates positive deviations from ideal mixing for the system studied.

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Article type: Paper
DOI: 10.1039/F19868201805
Citation: J. Chem. Soc., Faraday Trans. 1, 1986,82, 1805-1811
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    Mixed adsorption of a non-ionic and an anionic surfactant at the carbon–aqueous solution interface

    M. J. Hey, J. W. Mactaggart and C. H. Rochester, J. Chem. Soc., Faraday Trans. 1, 1986, 82, 1805
    DOI: 10.1039/F19868201805

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