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Effects of Counterions and Co-ions on the Drainage and Stability of Liquid Films and Foams

โœ Scribed by J.K. Angarska; K.D. Tachev; P.A. Kralchevsky; A. Mehreteab; G. Broze

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
314 KB
Volume
200
Category
Article
ISSN
0021-9797

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โœฆ Synopsis

According to the DLVO theory (14), at a fixed ionic Key Words: detergency: effect of citrates, phosphates; foam strength of the solution the type of co-ion should not affect films, kinetic stability; foams, effect of co-ions and Mg 2/ ; H-bonds: the double layer interaction in so far as the co-ions are re-SDS with weak acids; hydrolysis of SDS; ionic correlations: effect pelled by the charged film surfaces and do not enter the Stern on film stability; liquid films, drainage and stability; surface elasticlayers. On the other hand, in our preliminary experiments we ity: effect of linkers; surface forces: ionic correlations; syneresis of observed that the drainage and stability of foam films depend foams, effect of electrolytes.

strongly on the type of the co-ion at a given counterion and total ionic strength. This intriguing observation stimulated us to extend the study, whose results are the subject of the

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โœ Z.I. Lalchev; P.J. Wilde; D.C. Clark ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 131 KB

## films (CBF), and Newton black foam films (NBF). Foaming prop- These different types possess significantly different kinetic erties were investigated at 20 and 28ะŠC where DMPG is in the (e.g., drainage) and thermodynamic (e.g., stability) propergel and liquid-crystalline states. Higher conductiv