Investigating the role of a poorly soluble surfactant in a thermally driven 2D microfoam - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Soft Matter Année : 2016

Investigating the role of a poorly soluble surfactant in a thermally driven 2D microfoam

Résumé

Foam drainage dynamics is known to be strongly affected by the nature of the surfactants stabilising the liquid/gas interface. In the present work, we consider a 2D microfoam stabilized by both soluble (sodium dodecylsulfate) and poorly soluble (dodecanol) surfactants. The drainage dynamics is driven by a thermocapillary Marangoni stress at the liquid/gas interface [V. Miralles et al., Phys. Rev. Lett., 2014, 112, 238302] and the presence of dodecanol at the interface induces interface stress acting against the applied thermocapillary stress, which slows down the drainage dynamics. We define a damping parameter that we measure as a function of the geometrical characteristics of the foam. We compare it with predictions based on the interface rheological properties of the solution.
Fichier non déposé

Dates et versions

hal-01370412 , version 1 (22-09-2016)

Identifiants

Citer

Vincent Miralles, Emmanuelle Rio, Isabelle Cantat, Marie-Caroline Jullien. Investigating the role of a poorly soluble surfactant in a thermally driven 2D microfoam. Soft Matter, 2016, 12 (33), pp.7056-7062. ⟨10.1039/C6SM00686H⟩. ⟨hal-01370412⟩
271 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More