| Summary: | 碩士 === 國立成功大學 === 化學系專班 === 101 === Porous silica has extensive applications in many materials. For example, to use as the absorbent, the solid state template, the catalyzed load body, the electrode material, the polymer material filler and so on. It has been concerned for many reaches. The theory will study the mesoporous silica on polymer material blending and Ag Nanoparticles @ Mesoporous Silica as Antibacteria Material.
It starts with mesoporous silica. First, to blend mesoporous silica with high crystalline polyoxymethylene. The mesoporous silica is dispersed in the polyoxymethylene with mechanical melt mixing. In the experiment, the results shows that it can enhance the rigidity of polyoxymethylene, but it will decrease the toughness at the same time.
Secondly, during the polymerization of vinyl chloride to make mesoporous silica involved in the reaction. The retreat to the mechanical melt blending, is mainly intended to enhance the mesoporous material dispersion in polymer. According to the comparisons of mesoporous silica and solid nano-silica in the experiment, mesoporous silica makes PVC tensile strength slightly decreased, but does significationly increase in elongation.
The solid nano silica would also enable the tensile strength of PVC slightly decreased, but no obvious benefit in the elongation. Shows that the mesoporous silica materials for the rigid PVC does not affect, but is enhance in toughness efficiency.
Finally, using nano silver@mesoporous silica as an antibacterial material. To apply vinyl acetate-ethylene emulsion of surfactants (PVA) in the antibacterial test. The experimental results show that the nano silver@mesoporous silica gel state have significant antibacterial effect. If we apply this material on the white of emulsion, it will not be suitable because the color is cinnamon. But it we put this into 800℃, we can have white powder. In the antibacterial experiment, it shows less effect of antibacterial.
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