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Micellization and Interfacial Interaction Behaviors of Gemini Cationic Surfactants–CTAB Mixed Surfactant Systems
Author(s) -
Mohamed Dalia Emam,
Negm Nabel A.,
Mishrif Marwa R.
Publication year - 2013
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-013-1477-x
Subject(s) - chemistry , pulmonary surfactant , ammonium bromide , cationic polymerization , critical micelle concentration , surface tension , thermodynamics of micellization , micelle , adsorption , flory–huggins solution theory , gibbs isotherm , chemical engineering , molar ratio , thermodynamics , polymer chemistry , organic chemistry , aqueous solution , catalysis , biochemistry , physics , engineering , polymer
The interfacial and micellization behaviors of binary mixtures of two gemini cationic surfactants and conventional the cetyl trimethyl ammonium bromide surfactant were studied at various molar ratios. From the equilibrium surface tension measurements, the critical micelle concentrations (CMC) data were obtained as functions of the composition. Values of the CMC were analyzed according to the regular solution model developed by Rubingh for mixed micelles. Two interaction parameters were obtained for each system, the interaction at the interface, and in the micellar phase. The results showed that micellization and adsorption properties of the studied mixed systems depend on the spacer chain lengths of the gemini surfactants and their ratio in the mixed systems.