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Interfacial charge transport in water-in-oil microemulsions stabilized by ionic-non-ionic surfactant mixtures

Eicke, Hans-Friedrich and Meier, Wolfgang. (1996) Interfacial charge transport in water-in-oil microemulsions stabilized by ionic-non-ionic surfactant mixtures. Biophysical Chemistry, 58 (1). pp. 29-37.

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Official URL: https://edoc.unibas.ch/72363/

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Abstract

Interfacial charge transport and mobility have been studied in system-spanning nanodroplet clusters formed in water-in-oil microemulsions stabilized by non-ionic-ionic surfactant mixtures. An unexpectedly large reduction in the counterion mobility was derived from a two-step adsorption process which described the Langmuir-plot-like conductivity isotherm remarkably well. It also conformed very satisfactorily to mobility data of the sodium bis-2-ethylhexylsulfosuccinate (AOT) counterion derived from frequency-dependent dielectric dispersion measurements with singly dispersed nanodroplets of the same system as used with the cluster studies. The activation energy attributed to the counterion mobility allowed one to calculate approximately the minimum distance between the (positive) counterion in the bulk and the surfactant anion in the interface.
Faculties and Departments:05 Faculty of Science > Departement Chemie
05 Faculty of Science > Departement Chemie > Chemie > Makromolekulare Chemie (Meier)
UniBasel Contributors:Meier, Wolfgang P.
Item Type:Article, refereed
Article Subtype:Research Article
ISSN:0301-4622
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:24 Mar 2020 15:03
Deposited On:24 Mar 2020 15:03

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