Journal
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
Volume 38, Issue 2, Pages 303-308Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01932691.2016.1164060
Keywords
CTAB; electrolytes; gemini surfactant; mixed micellization; thermodynamics
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Funding
- Council of Scientific and Industrial Research (CSIR), New Delhi, India [STRAIT (CSC0201), 1204]
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Herein we report the effect of (chloride salt) electrolytes on the mixed micellization of (equimolar) a cationic gemini (dimeric) surfactant, hexanediyl-1,6-bis(dimethylcetylammonium bromide) (16-6-16), and a cationic conventional (monomeric) surfactant, cetyltrimethylammonium bromide (CTAB) in aqueous solutions. In absence and presence of (chloride salt) MCl (where MLi, Na, and K) electrolytes, the critical micelle concentration (CMC) of mixed (16-6-16+CTAB) surfactants was measured by surface tension measurements. With increasing the concentration of electrolyte, the CMCs were increasing. The surface properties and the thermodynamic parameters of the mixed micellar systems were also evaluated. From these evaluated thermodynamic parameters, it was found that in presence of electrolyte the stability of the mixed micellar system is more.
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