Renoncourt, A. and Vlachy, N. and Bauduin, P. and Drechsler, M. and Touraud, D. and Verbavatz, J. -M. and Dubois, M. and Kunz, Werner and Ninham, B. W. (2007) Specific alkali cation effects in the transition from micelles to vesicles through salt addition. LANGMUIR, 23 (5). pp. 2376-2381. ISSN 0743-7463,
Full text not available from this repository. (Request a copy)Abstract
The transition of ionic micelles to vesicles with added salts is explored in this paper. The catanionic surfactant solution was comprised of sodium dodecylsulfate (SDS) and dodecyltrimethylammonium bromide (DTAB) with an excess of SDS. The micellar size increased with concentration for all salts. No anion specificity was found, probably because of the excess of SDS. However, when the cation of the added salt was varied, large differences were observed in the hydrodynamic radii of the aggregates. A classification of the cations according to their ability to increase the measured hydrodynamic radii follows a Hofmeister series. The change in aggregate size can be explained by modified counterion binding and dehydration of the surfactant headgroups.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MIXED CATIONIC/ANIONIC VESICLES; HYDROXIDE SURFACTANTS; PHASE-BEHAVIOR; CETYLTRIMETHYLAMMONIUM BROMIDE; CATANIONIC VESICLES; MOLECULAR-DYNAMICS; AQUEOUS MIXTURES; BILAYERS; SULFATE; FORCES; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) > Prof. Dr. Werner Kunz |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Dec 2020 07:58 |
| Last Modified: | 22 Dec 2020 07:58 |
| URI: | https://pred.uni-regensburg.de/id/eprint/33168 |
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