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2047540 
Journal Article 
Anionic Surfactants and Surfactant Ionic Liquids with Quaternary Ammonium Counterions 
Brown, P; Butts, C; Dyer, R; Eastoe, J; Grillo, I; Guittard, F; Rogers, S; Heenan, R 
2011 
1 
Langmuir
ISSN: 0743-7463
EISSN: 1520-5827 
27 
8 
4563-4571 
English 
21410213 
WOS:000289321000040 
Small-angle neutron scattering and surface tension have been used to characterize a class of surfactants (SURFs), including surfactant ionic liquids (SAILs). These SURFs and SAILs are based on organic surfactant anions (single-tail dodecyl sulfate, DS, double-chain aerosol-OT, AOT, and the trichain, TC) with substituted quaternary ammonium cations. This class of surfactants can be obtained by straightforward chemistry, being cheaper and more environmentally benign than standard cationic SAILs. A surprising aspect of the results is that, broadly speaking, the physicochemical properties of these SURFs and SAILs are dominated by the nature of the surfactant anion and that the chemical structure of the added cation plays only a secondary role.