| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Miguel, M.
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article
Gel formation and association in systems of catanionic surfactant vesicles and oppositely charged polymers
Abstract
Mixed solutions of catanionic and anionic surfactants are known to form thermodynamically stable vesicles over wide concentration ranges. This phase behaviour is reviewed and the conditions of vesicle formation, and their microstructure is discussed. Vesicles are either rich in cationic or in anionic surfactant. The present work reports novel studies of the interaction between thermodynamically stable vesicles and water-soluble polymers. In particular, we have investigated the interaction between catanionic vesicles and oppositely charged polymers, either anionic (DNA) or cationic (cellulose derivatives). The experimental work included phase diagram determination, rheology, cryo transmission electron microscopy and direct visualization of single DNA molecules by fluorescence microscopy. Observations include an associative phase separation, a compaction of DNA with cationic but not with anionic vesicles, and the formation of novel polymer-vesicle gels.