Premium
Aggregation Behavior of Mixed Micellar System of Dodecyl Sulfate‐Based Surface‐Active Ionic Liquids and Anionic Surfactant in Aqueous Media
Author(s) -
Kumar Harsh,
Kaur Gagandeep
Publication year - 2021
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 - 10.1002/jsde.12486
Subject(s) - chemistry , sodium dodecyl sulfate , critical micelle concentration , surface tension , pulmonary surfactant , micelle , aqueous solution , thermodynamics of micellization , ionic liquid , gibbs isotherm , counterion , inorganic chemistry , aggregation number , mole fraction , chromatography , ion , organic chemistry , thermodynamics , biochemistry , physics , catalysis
Mixed micellization behavior of dodecyl sulfate‐based ionic liquids, i.e., 1‐propyl‐3‐methylimidazolium dodecyl sulfate [C 3 mim][DS] and 1‐hexyl‐3‐methylimidazolium dodecyl sulfate [C 6 mim][DS] with sodium dodecyl sulfate (SDS), is investigated at (298.15, 308.15, and 318.15) K in aqueous medium. For this, the conductometric measurements are carried out to evaluate the critical micelle concentrations ( cmc ), ideal critical micelle concentration ( cmc * ), degree of counterion dissociation ( g ), thermodynamic parameters, micellar mole fraction of ionic liquids, and interaction parameter ( β ) of the mixed system based on the different proposed models given in the literature. Further surface tension measurements have been carried out to confirm the value of cmc obtained via a conductivity study for all the studied systems at 298.15 K. Other surface parameters, such as surface tension at cmc ( γ cmc ), surface pressure ( ᴨ cmc ), surface excess ( Γ max ), and minimum area per molecule (A min ), have also been evaluated for both the systems.