Coalescence of dry foam under water injection - École des Ponts ParisTech Access content directly
Journal Articles Soft Matter Year : 2014

Coalescence of dry foam under water injection

Keyvan Piroird
  • Function : Author
  • PersonId : 956711
Elise Lorenceau

Abstract

When a small volume of pure water – typically a drop – is injected within an aqueous foam, it locally triggers the rupture of foam films, thus opening an empty cavity in the foam's bulk. We consider the final shape of this cavity and we quantify its volume as a function of the volume of injected water, the diameter of the bubbles and the liquid fraction of the foam. We provide quantitative understanding to explain how and when this cavity appears. We epitomize the dilution of surfactants at the water–air interfaces as the main cause lying behind the coalescence process. We identify a new coalescence regime for which a critical surfactant concentration rules the stability of the foam.
Fichier principal
Vignette du fichier
paper RM-KP correction.pdf (1.42 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01077425 , version 1 (24-10-2014)

Identifiers

  • HAL Id : hal-01077425 , version 1

Cite

Rémy Mensire, Keyvan Piroird, Elise Lorenceau. Coalescence of dry foam under water injection. Soft Matter, 2014, 10, pp.7068. ⟨hal-01077425⟩
147 View
299 Download

Share

Gmail Facebook X LinkedIn More