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The gibbs energy, chemical potential, and state parameters of the surface of an ionic micelle in the form of an ellipsoid of revolution

  • Physical Chemistry Of Surface Phenomena
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Abstract

A molecular-thermodynamic model of an ionic micelle in the form of an ellipsoid of revolution was suggested. Equations for the chemical potential of an ellipsoidal micelle, the work of transfer of ions from solution volume into the micelle, and the state parameters of the surface of the micelle (fraction of free hydrophobic surface, surface tension coefficient, and surface charge density) were obtained. The Gibbs energy, chemical potential, work of transfer, and state parameters of an ellipsoidal micelle were determined as depending on the form factor of the corresponding ellipsoid. The model was verified for the example of sodium decyl sulfate micelles. The calculated parameters were close to the thermochemical data on the asymmetrization of spherical micelles in a solution of sodium decyl sulfate. The equilibrium ion-micellar solution composition was estimated.

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Authors and Affiliations

  1. Ivanovo State University, Ivanovo, Russia

    V. S. Kuznetsov, N. V. Usol’tseva & A. P. Blinov

Authors
  1. V. S. Kuznetsov
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  2. N. V. Usol’tseva
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  3. A. P. Blinov
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Correspondence to N. V. Usol’tseva.

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Kuznetsov, V.S., Usol’tseva, N.V. & Blinov, A.P. The gibbs energy, chemical potential, and state parameters of the surface of an ionic micelle in the form of an ellipsoid of revolution. Russ. J. Phys. Chem. 82, 2346–2353 (2008). https://doi.org/10.1134/S0036024408130311

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  • DOI: https://doi.org/10.1134/S0036024408130311

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