Back to Search
Start Over
Foam drainage. Possible influence of a non-newtonian surface shear viscosity.
- Source :
-
Journal of Colloid & Interface Science . Jul2015, Vol. 449, p373-376. 4p. - Publication Year :
- 2015
-
Abstract
- We describe forced drainage experiments of foams made with model surfactant solutions with different surface rheology. We analyze the origin of two distinct drainage transitions reported in the literature, between regimes where the bubble surfaces are mobile or rigid. We propose that both transitions are related to the surface shear viscosity and to its shear thinning behavior. Shear thinning could also account for the huge discrepancies between measurements reported in the literature. The role of surface tension gradients, i.e. Marangoni effect, could not possibly explain the behavior observed with the different solutions. [ABSTRACT FROM AUTHOR]
- Subjects :
- *FOAM
*DRAINAGE
*NON-Newtonian fluids
*VISCOSITY
*SURFACE phenomenon
Subjects
Details
- Language :
- English
- ISSN :
- 00219797
- Volume :
- 449
- Database :
- Academic Search Index
- Journal :
- Journal of Colloid & Interface Science
- Publication Type :
- Academic Journal
- Accession number :
- 102073589
- Full Text :
- https://doi.org/10.1016/j.jcis.2014.12.060