| Gradient polymer blend materials through self-organization have attracted increasing attention of many investigators recently. Due to one component in blends having special functional groups, this component could self-organize to the surface of blend films during film-formation process or annealing process, and accordingly, a film surface with special properties is obtained. Organosilicone acrylate polymers have much lower surface free energy than non-organosilicane acrylate polymers, so self-organization will happen during the film-formation of their latex blends under effects of surface free energy. Finally, an organosilicone acrylate polymer material with gradient film structure is obtained. In this gradient material, one surface side of the blend film exhibits special surface properties, such as antifouling property, self-cleaning property, water-resistance and oil-resistance, whereas, the other surface side shows good adhesionIn this theses, firstly, a reactive organosilicone monomer mathacryloxypropyltris (trimethlsiloxy)silane(TRIS),was synthesized by substitution reaction between math acryloxypropyltrimethloxysilane(KH-570) and chlorotrimethylsilane (CMS).Not only the hydrolysis problem of KH-570 was solved in the process of emulsion polymerization, but also -Si(CH3)3 group was induced into the molecular, that could effectively increase the content of organosilicon of the latexes prepared, and provided the copolymer excellent water-resistance.Secondly, with sodium lauryl sulfate(SDS) and sodium 3-alyoxy-2-hydroxy propane sulfonate(COPS-1) as composite emulsifier system, methylmethacrylate and self-made monomer TRIS were used as raw materials, a series of TRIS/MMA copoly-mer latexes were prepared by seeded semibatch emulsion polymerization. A PTRIS latex and a PMMA latex were prepared by batch emulsion polymerization. The properties, average particle size and distribution, particle morphology and Tg of these latexes were tested, respectively. The results indicated that as the mass content of TRIS increased, the latexes'stability decreased, the average particle size increased while the distribution and Tg platform boarded. In the end, the TEM photograph showed that the copolymer latex particle had a special morphology with three layers. The free energy of these copolymer films decreased as the content of organic silicone decreased, and all of them provided excellent water-resistance.Finally, polysilane-polyacrylate gradient films were prepared by emulsion blend method through self-organization. How the factors, such as film-formation temperat-ure, Tg difference, heat treatment and film formation matrix influenced on the formation process of self-organization of polysilane-polyacrylate gradient films were discussed in details with the characterizations of surface contact angel method, SEM, TEM and so on. The results indicated that increasing the film-formation temperature could promote the two components migrate in latex blend. Take Samplel for example, when the film-formation was lower than the Tg of P (TRIS-co-MMA), annealing could help organic silicone segment migrate, that could increase the difference between the two surface free energies of the film, while when the film-formation was higher than the Tg of P (TRIS-co-MMA), annealing had Iittlie influence with the two surface free energies. The larger the Tg difference between two components was, the more obvious the self-organization effect appeared. In the end, matrix kind could influence the migrate direction,degree of organic silicone segment and the gradient structure.
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