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Hydrodynamics of thin liquid films Effect of surface diffusion on the rate of thinning of foam films

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  • Colloid Science
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Summary

The rate of thinning of foam films of aqueous solutions of valeric and caproic acids is studied. Substantial deviations from Reynolds' equation have been obtained which correspond to the previous theoretical prediction. The higher rate of thinning of the films is considered to be due to the effect of surface diffusion. From the experimental data and the theory the order of magnitude of the surface diffusion coefficient for these systems has been estimated.

Zusammenfassung

Die Verdünnungsgeschwindigkeit von Schaumfilmen aus wäßrigen Lösungen der Valerian- und Capronsäure wurde erforscht. Bedeutende Abweichungen von der Reynolds' Gleichung, die der theoretischen Vorhersagung entsprechen, wurden festgestellt. Die erhöhte Verdünnungsgeschwindigkeit wurde als Folge der Oberflächendiffusion betrachtet. Die Größenordnung der Koeffizienten der Oberflächendiffusion dieser Systeme wurde aus den experimentellen Werten und der Theorie berechnet.

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Authors and Affiliations

  1. Faculty of Chemistry, Department of Physical Chemistry, 1, Anton Ivanov Ave., Sofia 26, Bulgaria

    E. D. Manev, Chr St. Vassilieff & I. B. Ivanov

Authors
  1. E. D. Manev
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  2. Chr St. Vassilieff
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  3. I. B. Ivanov
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Manev, E.D., Vassilieff, C.S. & Ivanov, I.B. Hydrodynamics of thin liquid films Effect of surface diffusion on the rate of thinning of foam films. Colloid & Polymer Sci 254, 99–102 (1976). https://doi.org/10.1007/BF01526745

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  • DOI: https://doi.org/10.1007/BF01526745

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