- Title
- Surfactant adsorption at the surface of mixed ionic liquids and ionic liquid water mixtures
- Creator
- Wakeham, Deborah; Warr, Gregory G.; Atkin, Rob
- Relation
- Langmuir Vol. 28, Issue 37, p. 13224-13231
- Publisher Link
- http://dx.doi.org/10.1021/la302184h
- Publisher
- American Chemical Society
- Resource Type
- journal article
- Date
- 2012
- Description
- Surface tensiometry and neutron reflectivity have been used to elucidate the structure of the adsorbed layer of nonionic surfactant tetraethylene glycol tetradecyl ether (C₁₄E₄) at the free surface of the ionic liquids ethylammonium nitrate (EAN) and ethanolammonium nitrate (EtAN) and their binary mixtures with each other and with water. Surface tensions reveal that the critical micelle concentration (cmc) depends strongly on solvent composition. The adsorbed surfactant structure elucidated by neutron reflectivity shows that the level of solvation of the ethylene oxide groups varies for both the pure and mixed solvents. This is attributed to solvent–solvent interactions dominating solvent–surfactant interactions.
- Subject
- surfaces; ionic liquids; surfactant adsorption; ethylammonium nitrate (EAN); ethanolammonium nitrate
- Identifier
- http://hdl.handle.net/1959.13/1039137
- Identifier
- uon:13619
- Identifier
- ISSN:0743-7463
- Rights
- This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/la302184h
- Language
- eng
- Full Text
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