Journal Articles Journal of Colloid and Interface Science Year : 2014

Foam drainage. Possible influence of a non-newtonian surface shear viscosity

Sébastien Gauchet
  • Function : Author
Marc Durand
  • Function : Author

Abstract

We describe forced drainage experiments of foams made with model surfactant solutions with different surface rheology. We analyze the origin of two distinct drainage transitions reported in the literature, between regimes where the bubble surfaces are mobile or rigid. We propose that both transitions are related to the surface shear viscosity and to its shear thinning behavior. Shear thinning could also account for the huge discrepancies between measurements reported in the literature. The role of surface tension gradients, i.e. Marangoni effect, could not possibly explain the behavior observed with the different solutions.

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Dates and versions

hal-04882752 , version 1 (13-01-2025)

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Sébastien Gauchet, Marc Durand, Dominique Langevin. Foam drainage. Possible influence of a non-newtonian surface shear viscosity. Journal of Colloid and Interface Science, 2014, 449, pp.373-376. ⟨10.1016/j.jcis.2014.12.060⟩. ⟨hal-04882752⟩
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