Investigation of Thin Aqueous Films on Silica Using a Modified Interferometric Technique.
The thinning behavior of liquid films between free bubbles and silica is investigated using the interferometric technique. Stable films were obtained at higher salt concentrations compared to previous studies because of the improved cleaning procedure. In contrast to the captive bubble technique used in the past, the free bubble method employed more closely approximates such processes as flotation. The results obtained for aqueous films at low and high ionic strengths are in better agreement with theoretical predictions than those in previous studies. Copyright 2000 Academic Press.
Somasundaran
P
NSF IUCR Center for Advanced Studies in Novel Surfactants Langmuir Center for Colloids and Interfaces, Columbia University, 911 Mudd Building, New York, New York, 10027
Simpson
S
Jain
RK
Ivanov
I
Raghuraman
V