El Maangar, Asmae and Degot, Pierre and Huber, Verena and Causse, Jeremy and Berthault, Patrick and Touraud, Didier and Kunz, Werner and Zemb, Thomas (2020) Pre-nucleation cluster formation upon ethyl acetate addition to an aqueous solution of an anionic hydrotrope. JOURNAL OF MOLECULAR LIQUIDS, 310: 113240. ISSN 0167-7322, 1873-3166
Full text not available from this repository. (Request a copy)Abstract
Hydrotropes are used to solubilize poorly soluble solutes. Here the general features of the solution behaviour of the very common anionic hydrotrope sodium salicylate is investigated. With the use of density and scattering measurements, it is demonstrated that around the critical point neither pre-Ouzo structuring nor an Ouzo effect are present. By contrast, in a domain near the liquid-solid phase boundary, X-ray light and neutron scattering combined with a density excess determination prove the presence of dynamic aggregates. These aggregates are stabilized without any surfactants, but by selective solvation of ethyl acetate, reminiscent of stable liquid pre-nucleation aggregates. And most surprising: in water saturated by ethyl acetate (20% wt), sodium salicylate micellizes like a medium chain classical surfactant. (C) 2020 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | NEUTRON-SCATTERING; TERNARY-SYSTEMS; SOLUBILIZATION; MICELLES; WATER; OUZO; MICROEMULSIONS; AGGREGATION; SALICYLATE; MIXTURES; Hydrotrope; Sodium salicylate; Ethyl acetate; Pre-nucleation aggregate; Critical phase separation |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) 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: | 18 Mar 2021 08:42 |
| Last Modified: | 18 Mar 2021 08:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/44208 |
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