Micelle formation in aqueous solutions of dodecylbenzene sulfonic acid studied by small-angle neutron scattering

Structure and interaction parameters of micelles in solutions of dodecylbenzene sulfonic acid (DBSA) in deuterated water are studied by small-angle neutron scattering. The dependences of micellar aggregation number, fractional charge, charge per micelle and surface potential on surfactant concentrat...

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Bibliographic Details
Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 2010-10, Vol.369 (1), p.160-164
Main Authors: Petrenko, V.I., Avdeev, M.V., Garamus, V.M., Bulavin, L.A., Aksenov, V.L., Rosta, L.
Format: Article
Language:English
Subjects:
Agglomeration
Aqueous solutions
Charge
Dodecylbenzene sulfonic acid
Interaction parameters
Micelle formation
Micelles
Neutron scattering
Polar ferrofluids
Small-angle neutron scattering
Sulfonic acid
Surfactants
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Summary:Structure and interaction parameters of micelles in solutions of dodecylbenzene sulfonic acid (DBSA) in deuterated water are studied by small-angle neutron scattering. The dependences of micellar aggregation number, fractional charge, charge per micelle and surface potential on surfactant concentration are analyzed. A typical increase in the micelle size with the growth in the acid content is found, which can be related to the transition from spherical to rod-like micelles. The obtained data are used for estimating surfactant micelle concentration in water-based ferrofluids stabilized with DBSA.
ISSN:0927-7757
1873-4359
DOI:10.1016/j.colsurfa.2010.08.023