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JSIR Vol.65 [2006] >
JSIR Vol.65(01) [January 2006] >
| Title: | Effect of co-solutes on the physico-chemical properties of surfactant solutions |
| Authors: | Sansanwal, P K |
| Keywords: | Conductance
Dioxane
Glycerol
Physico-chemical properties
Pyrene flouorescence
Surface tension
Surfactants |
| Issue Date: | Jan-2006 |
| Publisher: | CSIR |
| Abstract: | Physico-chemical studies of some aqueous surfactant solutions were carried out by employing conductance, surface tension and spectrofluorometric techniques. From conductivity and surface tension measurements, critical micelle concentration (CMC), counter-ion association (α), equivalent conductance at infinite dilution (٨0), surface excess concentration ( ), minimum area per molecule (Amin), surface pressure at CMC (
CMC), thermodynamic properties of micellization ( Gºmic, Hºmic, Sºmic) and adsorption (Gºads, Hºads and Sºads) have been obtained for an anionic [bis (2-ethylhexyl) sulphosuccinate sodium salt (AOT)], a cationic [cetyl trimethyl ammonium bromide (CTAB)] and a nonionic [polyethylene (23) lauryl ether (Brij-35)] surfactant solutions. Effect of mixing co-solutes (dioxane and glycerol) on the physico-chemical properties of surfactant systems at 298.15, 308.15 and 318.15 K has been investigated. Surfactants micellar characteristics and their interaction with co-solutes were also investigated by fluorescence measurements of solutions using pyrene as a fluorescence probe. |
| Page(s): | 57-64 |
| ISSN: | 0975-1084 (Online); 0022-4456 (Print) |
| Source: | JSIR Vol.65(01) [January 2006]
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