Interface composition of multiple emulsions : rheology as a probe
We have investigated the dynamic rheological properties of concentrated multiple emulsions to characterize their amphiphile composition at interfaces. Multiple emulsions (W1/O/W2) consist of water droplets (W1) dispersed into oil globules (O), which are redispersed in an external aqueous phase (W2)....
| Publié dans: | Langmuir : the ACS journal of surfaces and colloids. - 1985. - 20(2004), 20 vom: 28. Sept., Seite 8576-81 |
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| Auteur principal: | |
| Autres auteurs: | , |
| Format: | Article |
| Langue: | English |
| Publié: |
2004
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| Accès à la collection: | Langmuir : the ACS journal of surfaces and colloids |
| Sujets: | Journal Article Acrylates Emulsions Hexoses Molecular Probes Surface-Active Agents Water 059QF0KO0R sorbitan monooleate 06XEA2VD56 |
| Résumé: | We have investigated the dynamic rheological properties of concentrated multiple emulsions to characterize their amphiphile composition at interfaces. Multiple emulsions (W1/O/W2) consist of water droplets (W1) dispersed into oil globules (O), which are redispersed in an external aqueous phase (W2). A small-molecule surfactant and an amphiphilic polymer were used to stabilize the inverse emulsion (W1 in oil globules) and the inverse emulsion (oil globules in W2), respectively. Rheological and interfacial tension measurements show that the polymeric surfactant adsorbed at the globule interface does not migrate to the droplet interfaces through the oil phase. This explains, at least partly, the stability improvement of multiple emulsions as polymeric surfactants are used instead of small-molecule surfactants |
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| Description: | Date Completed 21.08.2006 Date Revised 20.11.2014 published: Print Citation Status MEDLINE |
| ISSN: | 1520-5827 |