期刊
TENSIDE SURFACTANTS DETERGENTS
卷 45, 期 6, 页码 326-329出版社
CARL HANSER VERLAG
DOI: 10.3139/113.100391
关键词
Microemulsions; polyelectrolytes; nanoparticles
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.
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