Reference : Investigation of SDS, DTAB and CTAB micelle microviscosities by electron spin resonance
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/11109
Investigation of SDS, DTAB and CTAB micelle microviscosities by electron spin resonance
English
Bahri, Mohamed Ali mailto [Université de Liège - ULg > Département de physique > Spectroscopie biomédicale >]
Hoebeke, Maryse mailto [Université de Liège - ULg > Département de physique > Spectroscopie biomédicale >]
Grammenos, Angeliki mailto [Université de Liège - ULg > Département de physique > Spectroscopie biomédicale >]
Delanaye, Lisiane [Université de Liège - ULg > Département de physique > Spectroscopie biomédicale > > >]
Vandewalle, Nicolas mailto [Université de Liège - ULg > Département de physique > Physique statistique >]
Seret, Alain mailto [Université de Liège - ULg > Département de physique > Imagerie médicale expérimentale >]
15-Nov-2006
Colloids and Surfaces A : Physicochemical and Engineering Aspects
Elsevier Science Bv
290
1-3
206-212
Yes (verified by ORBi)
International
0927-7757
Amsterdam
The Netherlands
[en] Electron spin resonance ; ESR ; micelle ; microviscosity ; DTAB ; CTAB ; SDS
[en] Electron spin resonance spectroscopy (ESR) of the nitroxide labelled fatty acid probes (5-, 16-doxyl stearic acid) was used to monitor the micelle microviscosity of three surfactants at various concentrations in aqueous solution: sodium dodecyl sulphate (SDS), dodecyltrimethylammonium bromide (DTAB) and cetyltrimethylammonium bromide (CTAB). At low surfactant concentration, there is no micelle, the ESR probe is dissolved in water/surfactant homogeneous phase and gives his microviscosity. At higher surfactant concentration, an abrupt increase in microviscosity indicates the apparition of micelles and, the solubilization of the probes in micelles. The microviscosity of the three surfactants, in a large surfactant range, was obtained as well as the critical micelle concentration (CMC). The microviscosity increased slightly with the increase in surfactant concentration. Phosphate buffer lowered the CMC value and generally increased the microviscosity. (c) 2006 Elsevier B.V. All rights reserved.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/11109
10.1016/j.colsurfa.2006.05.021
http://www.sciencedirect.com/science/journal/09277757
The original publication is available at www.sciencedirect.com
The authors thank Elsevier for allowing deposit of their final version on the ULg institutional repository.

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