Water film squeezed between oil and solid: drainage towards stabilization by disjoining pressure - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Soft Matter Année : 2017

Water film squeezed between oil and solid: drainage towards stabilization by disjoining pressure

Résumé

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.
Fichier principal
Vignette du fichier
article_final_2_HAL.pdf (1.27 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01474323 , version 1 (22-02-2017)

Identifiants

Citer

Laure Bluteau, Maurice Bourrel, Nicolas Passade-Boupat, Laurence Talini, Emilie Verneuil, et al.. Water film squeezed between oil and solid: drainage towards stabilization by disjoining pressure. Soft Matter, 2017, 13 (7), pp.1384 - 1395. ⟨10.1039/C6SM02423H⟩. ⟨hal-01474323⟩
131 Consultations
143 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More