title: Water film squeezed between oil and solid: drainage towards stabilization by disjoining pressure.
abstract: The spontaneous drainage of aqueous solutions of salt squeezed between an oil drop and a glass surface is studied experimentally. The thickness profile of the film is measured in space and time by reflection interference microscopy. As the film thins down, three regimes are identified: a capillary dominated regime, a mixed capillary and disjoining pressure regime, and a disjoining pressure dominated regime. These regimes are modeled within the lubrication approximation, and the role of the disjoining pressure is precisely investigated in the limit of thicknesses smaller than the range of electrostatic interactions. We derive simple analytical laws describing the drainage dynamics, thus providing tools to uncouple the effect of the film geometry from the effects of the disjoining or capillary pressures.
authors.affiliation: Laboratoire Sciences et Ingénierie de la Matière Molle, CNRS UMR7615, ESPCI Paris, PSL Research University, 10 rue Vauquelin, F-75231 Paris, France. francois.lequeux@espci.fr and Laboratoire Sciences et Ingénierie de la Matière Molle, Université Pierre et Marie Curie, Sorbonne-Universités, 10 rue Vauquelin, Paris, France and TOTAL CSTJF, Avenue Larribau, 64000, Pau, France and Laboratoire Physico-chimie des Interfaces Complexes, ESPCI Paris, 10 rue Vauquelin, F-75231 Paris, France and Bâtiment CHEMSTARTUP, Route Départementale 817, 64170 Lacq, France.
authors.forename: Laure
authors.identifier: http://orcid.org/0000-0002-4962-993X
authors.initials: L
authors.lastname: Bluteau
authors.affiliation: TOTAL CSTJF, Avenue Larribau, 64000, Pau, France and Laboratoire Physico-chimie des Interfaces Complexes, ESPCI Paris, 10 rue Vauquelin, F-75231 Paris, France and Bâtiment CHEMSTARTUP, Route Départementale 817, 64170 Lacq, France.
authors.forename: Maurice
authors.initials: M
authors.lastname: Bourrel
authors.affiliation: TOTAL CSTJF, Avenue Larribau, 64000, Pau, France and Laboratoire Physico-chimie des Interfaces Complexes, ESPCI Paris, 10 rue Vauquelin, F-75231 Paris, France and Bâtiment CHEMSTARTUP, Route Départementale 817, 64170 Lacq, France.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Passade-Boupat
authors.affiliation: Laboratoire Sciences et Ingénierie de la Matière Molle, CNRS UMR7615, ESPCI Paris, PSL Research University, 10 rue Vauquelin, F-75231 Paris, France. francois.lequeux@espci.fr and Laboratoire Sciences et Ingénierie de la Matière Molle, Université Pierre et Marie Curie, Sorbonne-Universités, 10 rue Vauquelin, Paris, France and Laboratoire Physico-chimie des Interfaces Complexes, ESPCI Paris, 10 rue Vauquelin, F-75231 Paris, France and Bâtiment CHEMSTARTUP, Route Départementale 817, 64170 Lacq, France.
authors.forename: Laurence
authors.initials: L
authors.lastname: Talini
authors.affiliation: Laboratoire Sciences et Ingénierie de la Matière Molle, CNRS UMR7615, ESPCI Paris, PSL Research University, 10 rue Vauquelin, F-75231 Paris, France. francois.lequeux@espci.fr and Laboratoire Sciences et Ingénierie de la Matière Molle, Université Pierre et Marie Curie, Sorbonne-Universités, 10 rue Vauquelin, Paris, France and Laboratoire Physico-chimie des Interfaces Complexes, ESPCI Paris, 10 rue Vauquelin, F-75231 Paris, France and Bâtiment CHEMSTARTUP, Route Départementale 817, 64170 Lacq, France.
authors.forename: Emilie
authors.initials: E
authors.lastname: Verneuil
authors.affiliation: Laboratoire Sciences et Ingénierie de la Matière Molle, CNRS UMR7615, ESPCI Paris, PSL Research University, 10 rue Vauquelin, F-75231 Paris, France. francois.lequeux@espci.fr and Laboratoire Sciences et Ingénierie de la Matière Molle, Université Pierre et Marie Curie, Sorbonne-Universités, 10 rue Vauquelin, Paris, France and Laboratoire Physico-chimie des Interfaces Complexes, ESPCI Paris, 10 rue Vauquelin, F-75231 Paris, France and Bâtiment CHEMSTARTUP, Route Départementale 817, 64170 Lacq, France.
authors.forename: François
authors.initials: F
authors.lastname: Lequeux