The Measurement of Electrophoretic Mobility in Surfactant Systems Using NMR

Coveney, F.M. and Strange, John H. and Smith, E.G (1992) The Measurement of Electrophoretic Mobility in Surfactant Systems Using NMR. Molecular Physics, 75 (1). pp. 127-137. ISSN 0026-8976. (The full text of this publication is not available from this repository)

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Official URL
http://dx.doi.org/10.1080/00268979200100101

Abstract

A combined nuclear magnetic resonance (NMR) and electrophoresis method (MREP) is used for the measurement of electrophoretic mobility of charged micelles in surfactant systems. A modified NMR spin-echo pulse sequence with pulsed magnetic field gradients is employed to measure the slow flow rates encountered in electrophoresis of observation of phase shifts in the NMR spin-echo. Electrophoretic mobility was determined for anionic sodium dodecyl sulphate and cationic cetyl trimethyl ammonium bromide surfactants at various concentrations. Also, measurements were made with added salt, which alters the ionic environment of the micelles. Finally, an attempt was made to study mixed surfactant systems using an extension of the MREP technique which involved Fourier analysis and observation of the phase shifts due to flow in the frequency spectrum.

Item Type: Article
Subjects: Q Science > QC Physics
Divisions: Faculties > Science Technology and Medical Studies > Medway School of Pharmacy
Depositing User: P. Ogbuji
Date Deposited: 30 Sep 2009 07:41
Last Modified: 30 Jun 2014 11:26
Resource URI: http://kar.kent.ac.uk/id/eprint/22532 (The current URI for this page, for reference purposes)
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