NDLI: Interaction Between Ionic Liquids and Gemini Surfactant: A Detailed Investigation into the Role of Ionic Liquids in Modifying Properties of Aqueous Gemini Surfactant

Content Provider	Springer Nature Link
Author	More, Utkarsh Kumari, Pallavi Vaid, Zuber Behera, Kamalakanta Malek, Naved I.
Copyright Year	2015
Abstract	Tuning physicochemical properties of aqueous surfactant solutions comprised of normal or reverse micelles by external additives is of utmost importance due to the enormous application potential of surfactant-based systems. Unusual and interesting properties of environmentally benign ionic liquids (IL) make them suitable candidates for this purpose. To understand and establish the role of IL in modifying properties of aqueous gemini surfactants, we studied the effect of the IL, 1-hexyl-3-methylimidazolium bromide ([Hmim][Br]) and 1-octyl-3-methylimidazolium bromide ([Omim][Br]) on the properties of the aqueous cationic gemini surfactant 1,6-hexanediyl-α,ω-bis(dimethyltetradecyl)ammonium bromide (14-6-14,2Br$^{−}$). The behavioral changes were investigated by measuring the critical micelle concentration (CMC ) using electrical conductance, surface tension, dye solubilization and fluorescence probe measurements at 298.15 K. It was observed that the CMC of 14-6-14,2Br$^{−}$ gemini surfactant decreases with addition of IL, thus favoring the micellization process. An increase in micellar size was observed at lower IL concentration using dynamic light scattering, with a decrease in aggregation number (N $_{agg}$) determined from fluorescence probe quenching measurements. It is noteworthy that the extent of modulation of the micellar properties is different for both the IL due to their structural differences. IL behave like electrolytes at lower concentrations and cosurfactants at higher concentrations and form mixed micelles with the cationic gemini surfactant showing an increase in N $_{agg}$.
Starting Page	75
Ending Page	89
Page Count	15
File Format	PDF
ISSN	10973958
Journal	Journal of Surfactants and Detergents
Volume Number	19
Issue Number	1
e-ISSN	15589293
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-10-29
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ionic liquids Gemini surfactants Fluorescence quenching Dynamic light scattering Aggregation number Industrial Chemistry/Chemical Engineering Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Surfaces and Interfaces, Thin Films Polymer Sciences Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Physical and Theoretical Chemistry Chemical Engineering

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