Please use this identifier to cite or link to this item:
Title: Effect of co-solutes on the physico-chemical properties of surfactant solutions
Authors: Sansanwal, P K
Keywords: Conductance
Physico-chemical properties
Pyrene flouorescence
Surface tension
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 (<i style="">α</i>), equivalent conductance at infinite dilution (٨<sub>0</sub>), surface excess concentration (<img src='/image/spc_char/italic_r.gif'>), minimum area per molecule (<i style="">A<sub>min</sub></i>), surface pressure at CMC <i style="">(</i> <i style=""><sub>CMC</sub></i>), thermodynamic properties of micellization <i style="">(</i><i style=""><img src='/image/spc_char/delta.gif'>Gº<sub>mic</sub>, </i><i style=""><img src='/image/spc_char/delta.gif'>Hº<sub>mic</sub>, </i><i style=""><img src='/image/spc_char/delta.gif'>Sº<sub>mic</sub></i>) and adsorption <i style="">(</i><i style=""><img src='/image/spc_char/delta.gif'>Gº<sub>ads</sub>, </i><i style=""><img src='/image/spc_char/delta.gif'>Hº<sub>ads</sub> </i>and <i style=""><img src='/image/spc_char/delta.gif'>Sº<sub>ads</sub></i>) have been obtained for an anionic [<i style="">bis </i>(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.
Description: 57-64
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Appears in Collections:JSIR Vol.65(01) [January 2006]

Files in This Item:
File Description SizeFormat 
JSIR 65(1) 57-64.pdf148 kBAdobe PDFView/Open

Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.