The Influence of Electrolytes on the Mixed Micellization of Equimolar (Monomeric and Dimeric) Surfactants
- Authors: Alam M.S.1,2, Siddiq A.M.1, Mandal A.B.1,3
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Affiliations:
- Industrial Chemistry Laboratory
- Chemical Sciences, Academy of Scientific and Innovative Research (AcSIR)
- Chemical Laboratory
- Issue: Vol 92, No 1 (2018)
- Pages: 185-190
- Section: Physical Chemistry of Surface Phenomena
- URL: https://journals.rcsi.science/0036-0244/article/view/169876
- DOI: https://doi.org/10.1134/S0036024418010028
- ID: 169876
Cite item
Abstract
The influence of halide ions of (sodium salt) electrolytes on the mixed micellization of a cationic gemini (dimeric) surfactant, hexanediyl-1,6-bis(dimethylcetylammonium) bromide (16-6-16) and a cationic conventional (monomeric) surfactant, cetyltrimethylammonium bromide (CTAB) have been investigated. The critical micelle concentration (CMC) of the mixed (16-6-16+CTAB) surfactants was measured by the surface tension measurements. The surface properties: viz., the surfactant concentration required to reduce the surface tension by 20 mN/m (C20), the surface pressure at the CMC (ΠCMC), the maximum surface excess concentration at the air/water interface (Γmax), the minimum area per surfactant molecule at the air/water interface (Amin), etc. of the mixed micellar surfactant systems were evaluated. In the absence and presence of electrolytes, the thermodynamic parameters of the mixed micellar surfactant systems were also evaluated.
About the authors
Md. Sayem Alam
Industrial Chemistry Laboratory; Chemical Sciences, Academy of Scientific and Innovative Research (AcSIR)
Author for correspondence.
Email: sayemalam@gmail.com
India, Adyar, Chennai, 600020; New Delhi, 110001
A. Mohammed Siddiq
Industrial Chemistry Laboratory
Email: sayemalam@gmail.com
India, Adyar, Chennai, 600020
Asit Baran Mandal
Industrial Chemistry Laboratory; Chemical Laboratory
Email: sayemalam@gmail.com
India, Adyar, Chennai, 600020; Adyar, Chennai, 600020