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Issue 19, 2010
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Adsorption layer characteristics of multi-component surfactants solutions

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An approximate model is derived for calculating the surface pressure, adsorption and rheological characteristics of multi-component surfactant mixtures from the adsorption parameters of the individual compounds. The proposed theory is validated with exact theoretical values and experimental data of equilibrium surface tensions and dilation rheology of binary mixtures of reorientable surfactants. It was shown that the given approximation for two, three and more components provides good agreement with the exact model for binary mixtures. The bubble profile analysis tensiometry is applied for studying the equilibrium surface tension and the rheological behaviour of mixed ternary C14EO8, C12EO5 and C10EO5 solutions in a wide range of total concentrations and surface oscillation frequencies. By comparison of experimental data with the calculated results it is possible to show that the proposed theoretical approach allows an accurate description of the adsorption and dilational rheological behaviour of the studied ternary surfactant mixtures.

Graphical abstract: Adsorption layer characteristics of multi-component surfactants solutions

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Publication details

The article was received on 12 Apr 2010, accepted on 10 Jun 2010 and first published on 04 Aug 2010

Article type: Paper
DOI: 10.1039/C0SM00235F
Citation: Soft Matter, 2010,6, 4694-4700

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    Adsorption layer characteristics of multi-component surfactants solutions

    V. B. Fainerman, E. V. Aksenenko, J. T. Petkov and R. Miller, Soft Matter, 2010, 6, 4694
    DOI: 10.1039/C0SM00235F

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