Surface shear viscosity and protein-surfactant interactions in mixed protein films adsorbed at the oil-water interface

1995 ◽  
Vol 9 (1) ◽  
pp. 35-42 ◽  
Author(s):  
Jianshe Chen ◽  
Eric Dickinson
Keyword(s):  
Shear Viscosity ◽  
Water Interface ◽  
Protein Films ◽  
Surface Shear ◽  
Surfactant Interactions ◽  
Oil Water ◽  
Mixed Protein ◽  
Surface Shear Viscosity

Mixed-Protein Films Adsorbed at the Oil-Water Interface

1987 ◽  
pp. 118-134 ◽  
Author(s):  
Julie Castle ◽  
Eric Dickinson ◽  
Brent S. Murray ◽  
George Stainsby
Keyword(s):  
Water Interface ◽  
Protein Films ◽  
Oil Water ◽  
Mixed Protein

scholarly journals Surface shear inviscidity of soluble surfactants

2014 ◽  
Vol 111 (10) ◽  
pp. 3677-3682 ◽  
Author(s):  
Zachary A. Zell ◽  
Arash Nowbahar ◽  
Vincent Mansard ◽  
L. Gary Leal ◽  
Suraj S. Deshmukh ◽  
...  
Keyword(s):  
Shear Viscosity ◽  
Nonionic Surfactants ◽  
Emulsion Stability ◽  
Foam Stability ◽  
Sensitivity Limit ◽  
Multiple Control ◽  
Surface Shear ◽  
Soluble Surfactants ◽  
Almost All ◽  
Surface Shear Viscosity

Foam and emulsion stability has long been believed to correlate with the surface shear viscosity of the surfactant used to stabilize them. Many subtleties arise in interpreting surface shear viscosity measurements, however, and correlations do not necessarily indicate causation. Using a sensitive technique designed to excite purely surface shear deformations, we make the most sensitive and precise measurements to date of the surface shear viscosity of a variety of soluble surfactants, focusing on SDS in particular. Our measurements reveal the surface shear viscosity of SDS to be below the sensitivity limit of our technique, giving an upper bound of order 0.01 μN·s/m. This conflicts directly with almost all previous studies, which reported values up to 103–104 times higher. Multiple control and complementary measurements confirm this result, including direct visualization of monolayer deformation, for SDS and a wide variety of soluble polymeric, ionic, and nonionic surfactants of high- and low-foaming character. No soluble, small-molecule surfactant was found to have a measurable surface shear viscosity, which seriously undermines most support for any correlation between foam stability and surface shear rheology of soluble surfactants.

The effect of surface shear viscosity on the damping of oscillations in millimetric liquid bridges

2011 ◽  
Vol 23 (8) ◽  
pp. 082102 ◽  
Author(s):  
Miguel A. Herrada ◽  
José M. Montanero ◽  
José M. Vega
Keyword(s):  
Shear Viscosity ◽  
Liquid Bridges ◽  
Surface Shear ◽  
Effect Of Surface ◽  
Surface Shear Viscosity
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