|Investigation of Surface and Micellar Properties of Mixed Cationic Surfactant and Ionic Liquid in Aqueous Medium|
|کد مقاله : 1067-PHYSCHEM20|
عفت طاهری *|
|Abstract: Surfactants are a class of organic compounds that can reduce the surface tension of water by configuration in solution surface. The performance of synergism (synergistic) can be far more than their pure state. Recently, ionic liquids with surface-active properties due to the specific characteristics (such as green solvent) have been considered. In this research, the interfacial and micellization behaviors of binary mixtures of an ionic liquid (1-hexyl 3-methylimidazolium chloride or C6mimCl) and cationic surfactant (CTAB) were studied at various mole fractions. The surface tension and conductivity techniques were used to determinevalues of surfactants in pure and mixed states. The Experimental results were analyzed according to the regular solution model developed by Client, Rubingh, Rosen and others. Interaction parameters (βS, βm), mole fraction (XS, Xm), activity coefficient (fS, fm) were calculated and analyzed at the interface and micellar phases.|
The thermodynamic parameters such as maximum surface excess (max), surface pressure (), excess free Gibbs energy of micellization (〖∆G〗_ex^m ), minimum area per molecule (Amin) calculated and investigated.
|Keywords: Surfactants; Ionic liquid; Interaction parameter; Synergism; Excess free Gibbs energy of micellization|
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