Physico-chemical and Spectroscopic Approach to Analyse the Behaviour of Surface-Active Ionic Liquid and Conventional Surfactant in Aqueous Glycine

Physico-chemical and Spectroscopic Approach to Analyse the Behaviour of Surface-Active Ionic... The present work reports a comparison of direct or indirect (water-mediated) interactions of surface active ionic liquid SAIL, tetrabutylammonium dodecylsulphate (TBADS) in aqueous solutions of glycine with those of sodium dodecylsulphate (SDS) in same solvent system, by employing techniques like conductivity, fluorescence, UV–Vis probe studies and clouding phenomenon. High hydrophobicity and penetrating ability of TBA+ counterions and most significant salting-out effect due to the preferential hydration of glycine molecules accounts for the enhanced micellization and better surface activity of TBADS as compared to its conventional analogue SDS. Further, driving force for the micellization in both the cases is the hydrophobic interactions, whereas in the case of SDS, London dispersion interactions as alternative forces also contribute considerably at higher temperatures. In addition, the decrease in the cloud point ( $$T_{\text{cp}}$$ T cp ) of aqueous TBADS solutions in the presence of glycine is attributed to the dehydration of hydrophilic head groups of micelles, resulting in their collapse and hence phase separation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Surfactants and Detergents Springer Journals

Physico-chemical and Spectroscopic Approach to Analyse the Behaviour of Surface-Active Ionic Liquid and Conventional Surfactant in Aqueous Glycine

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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2017 by AOCS
Subject
Chemistry; Industrial Chemistry/Chemical Engineering; Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution; Surfaces and Interfaces, Thin Films; Polymer Sciences; Physical Chemistry
ISSN
1097-3958
eISSN
1558-9293
D.O.I.
10.1007/s11743-017-1993-1
Publisher site
See Article on Publisher Site

Abstract

The present work reports a comparison of direct or indirect (water-mediated) interactions of surface active ionic liquid SAIL, tetrabutylammonium dodecylsulphate (TBADS) in aqueous solutions of glycine with those of sodium dodecylsulphate (SDS) in same solvent system, by employing techniques like conductivity, fluorescence, UV–Vis probe studies and clouding phenomenon. High hydrophobicity and penetrating ability of TBA+ counterions and most significant salting-out effect due to the preferential hydration of glycine molecules accounts for the enhanced micellization and better surface activity of TBADS as compared to its conventional analogue SDS. Further, driving force for the micellization in both the cases is the hydrophobic interactions, whereas in the case of SDS, London dispersion interactions as alternative forces also contribute considerably at higher temperatures. In addition, the decrease in the cloud point ( $$T_{\text{cp}}$$ T cp ) of aqueous TBADS solutions in the presence of glycine is attributed to the dehydration of hydrophilic head groups of micelles, resulting in their collapse and hence phase separation.

Journal

Journal of Surfactants and DetergentsSpringer Journals

Published: Jul 5, 2017

References

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