| Summary: | 碩士 === 國立臺北科技大學 === 材料科學與工程研究所 === 100 === In this study, we have three topics to discuss. First part is the preparation of mesoporous TiO2 was based on an evaporation induced self assembly (EISA) method using the Pluronic P123 as the structure-directing agent and the TBOT as the titanium source. Then,the three dimensional mesoporous titania thin film was prepared on the Ti substrate by the spin coating. A study amount on the basis of the interactions between inorganic-organic to form meso-structured composites.The reaction temperature is relatively order of mesostructure.The pore condition of mesoporous materials depend on the temperature changing of a micells. The result showns that aging time for 48 hrs and calcined at 250°C to synthesis the long range ordered mesoporous TiO2. By the SEM analysis, the ratio of P123/TBOT was 0.6 with two dimensional vertical channel shapes. And the TEM observation, it can clearly see the horizontal stripes by TiO2 thin film cross-section.When P123/TBOT was 0.9 (mesoporous TiO2 thin film with parallel channel), these results were confirmed by TEM, it reveals 2D-hexagonal arrangement mesoporous structure. And the electron diffraction patterns shows that the molar ratio of 0.6 and 0.9 are polycrystal.
Second part is in vitro bioactivity appraisement. The results shown that apatite was formed on the coating surface after immersion in simulated body fluid for 3 days to 28 days which indicates that the mesoporous film has the potential to chemical bonding with bone tissue.
Third part major discusses three parameters (mesoporous TiO2 thin film with vertical channel, parallel channel and pure titanium) to grow hydroxyapatite by hydrothermal method. The result shows that parallel channel mesoporous TiO2 thin film has better nucleation potential to grow hexagonal hydroxyapatite.
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