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Three Dimensionally Ordered Microstructure of Polycrystalline TiO2 Ceramics with Micro/meso Porosity
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 Title & Authors
Three Dimensionally Ordered Microstructure of Polycrystalline TiO2 Ceramics with Micro/meso Porosity
Chang, Myung Chul;
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In order to make a highly ordered three-dimensional porous structure of titania ceramics, porogen beads of PS [Polystyrene] and PMMA [poly(methylmetacrylate)] were prepared by emulsion polymerization using styrene monomer and methyl methacrylate monomer, respectively. The uniform beads of PS or PMMA latex were closely packed by centrifugation as a porogen template for the infiltration of titanium butoxide solution. The mixed compound of PS or PMMA with titanium butoxide was dried and the dry compacts were calcined at according to the firing schedule to prepare micro- and meso- structures of polycrystalline titania with monodispersed porosity. Inorganic frameworks composed of were formed and showed a three Dimensionally Ordered Microstructure [3DOM] of ceramics. The pulverized particles of the ceramic skeleton were characterized using XRD analysis. A monodispersed crystalline micro-structure with micro/meso porosity was observed by FE-SEM with EDX analysis. The 3DOM skeleton showed opalescent color tuning according to the direction of light.
Honeycomb skeleton;Monodispersed nano-beads;Titanium butoxide;Monodisperse ;Uniform porosity;
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