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Mixed Micellar Properties and Related Interaction Parameters of Butanediyl‐1,4‐bis(dodecyl dimethyl ammonium bromide) Gemini Surfactant with Nonionic Amphiphiles
Author(s) -
Sharma Gaurav,
Koya P. Ajmal
Publication year - 2014
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/s11743-013-1556-z
Subject(s) - chemistry , ammonium bromide , critical micelle concentration , pulmonary surfactant , micelle , cationic polymerization , thermodynamics of micellization , bromide , sorbitan , nonionic surfactant , polymer chemistry , organic chemistry , aqueous solution , fatty acid , fatty acid ester , biochemistry
Mixed micellization of cationic gemini surfactant butanediyl‐1,4‐bis(dimethyldodecylammonium bromide) with nonionic surfactants (sorbitan esters, alcohols and phenol ethoxylates) and triblock copolymers has been studied tensiometrically. Various physicochemical parameters of the studied systems including ideal CMC values, experimental and ideal micellar compositions, interaction parameters, activity coefficients of the components, etc. have been evaluated by considering theoretical models of Clint, Rubingh, Rosen and Maeda. The experimental critical micelle concentration (CMC) values of the mixed micelles were lower than the CMC values of the individual components and showed a negative deviation from ideal CMC (CMC*) values. The analysis reveals that the mole fractions of gemini are lower compared to the nonionic surfactants/triblock polymers and the values of Δ G m ° , Δ G ad ° , G min and Δ G ex m show that the spontaneity of the studied mixed micelles relatively decreases as the content of the gemini in the bulk phase increases.