Polymer-modified Microemulsions – a Template for the Formation of BaSO4 Nanoparticles / J. Koetz in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 45, N° 6/2008 (11-12/2008)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 45, N° 6/2008 (11-12/2008) . - p. 326-329 Titre : Polymer-modified Microemulsions – a Template for the Formation of BaSO4 Nanoparticles Type de document : texte imprimé Auteurs : J. Koetz, Auteur ; S. Lutter, Auteur ; M. Fechner, Auteur Année de publication : 2008 Article en page(s) : p. 326-329 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Microémulsions Nanoparticules Polyélectrolytes Tags : Microemulsions Résumé : Polymer-modified microemulsions can be obtained by adding polymers to a mixture consisting of water, oil, and a cosurfactant. In dependence on the type of polymer used quite different effects can be observed. On the one hand water soluble polymers can be incorporated into the individual water droplets of a water-in-oil microemulsion, or into droplet clusters, and on the other hand they can induce the formation of a sponge phase, that means a bicontinuous microemulsion. Our experiments have shown that nonionic polymers, hydrophobically modified polyampholytes, as well as polycations can induce the formation of a phase channel between the water-in-oil and the oil-in-water microemulsion. The polymer-modified microemulsions can be used as a new type of template for the formation of nanoparticles. Therefore, polymer-stabilized barium sulfate nanoparticles of quite different size and shape can be formed in the microemulsion template phase, and redispersed after solvent evaporation in water. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2830 [article]

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