Capillary imbibition of aqueous foams by miscible and nonmiscible liquids
| Autor: | Elise Lorenceau, Rémy Mensire, Keyvan Piroird |
|---|---|
| Přispěvatelé: | Laboratoire Navier (navier umr 8205), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2015 |
| Předmět: |
Gravity (chemistry)
Work (thermodynamics) Materials science Liquid fraction Aqueous solution Capillary action Liquid drop Thermodynamics Nanotechnology 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences 0103 physical sciences Imbibition Wetting 010306 general physics 0210 nano-technology [PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] |
| Zdroj: | Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2015, 92 (5), ⟨10.1103/PhysRevE.92.053014⟩ |
| ISSN: | 1550-2376 1539-3755 |
| DOI: | 10.1103/PhysRevE.92.053014⟩ |
| Popis: | International audience; When put in contact with a large liquid drop, dry foams wick owing to surface-tension-driven flows until reaching equilibrium. This work is devoted to the dynamics of this imbibition process. We both consider imbibition of wetting or non-wetting liquid, either by putting the dry foam into contact with the foaming solution that constitutes the foam or with organic oils. Indeed, with the appropriate choice of surfactants, oil spontaneously invades the liquid network of the foam without damaging it. Our experiments show an early-time dynamics in t 1/2 followed by a late-time dynamics in t 1/4. These features, which differ from theoretical works predicting a late-time t 1/3 dynamics, are rationalized considering the influence of the initial liquid fraction of the foam in the driving capillary force and the impact of gravity through the capillary-gravity equilibrium. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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