Abstract: A process for the preparation of kinetically stable semiconductor/polymer nanodispersion whereby the aqueous stability of the dispersed photocatalysts and polymer latex particles are ensured by the high surface charge. Consequently, the thin photocatalytically active antimicrobial coating prepared from this electrostatically stabilized aqueous dispersion by spray-coating method contains well-dispersed and evenly distributed surface photocatalyst particles immobilized by polymer and thus it provides homogeneous, transparent and mechanically stable photoreactive and antimicrobial thin film on arbitrary surfaces.

Abstract: The invention relates to nanocomposites comprising of (i) hydrogels synthetized by copolymerization of N-isopropylacrylamide and/or acrylamide and/or acrylic acid monomers and of (ii) layer silicates, and to the process for preparing them. The invention covers osmotically active hydrogel expanders containing said nano-composites, suitable for tissue expansion and the use of said materials for obtaining live skin.