J. Phys. IV France 11 (2001) Pr6-275-Pr6-280
Aqueous foam drainage. Role of the rheology of the foaming fluidM. Safouane1, M. Durand1, A. Saint Jalmes1, D. Langevin1 and V. Bergeron2
1 Laboratoire de Physique des Solides, bâtiment 510, Université Paris Sud, 91405 Orsay, France
2 Laboratoire de Physique Statistique de l'ENS, 24 rue Lhomond, 75237 Paris, France
We have studied the drainage of foams made with viscous solutions. In this way, drainage is slowed down, and microgravity conditions are approached. The behaviour of mixtures of water and glycerol follows the theoretical predictions, but that of aqueous solutions of a polymer (polyethylene oxide) do not : drainage is much faster than for water-glycerol mixtures of the same bulk viscosity. The origin of this puzzling behavior is still not understood.
© EDP Sciences 2001