| 학회 |
한국재료학회 |
| 학술대회 |
2009년 봄 (05/21 ~ 05/22, 무주리조트) |
| 권호 |
15권 1호 |
| 발표분야 |
나노생체재료 |
| 제목 |
Formation of TiO2 nanofibers in the Porus 3-D Al2O3/TiO2 Membrane Using Sponge method |
| 초록 |
TiO2 nano fiber was fabricated in the Porous 3-D Al2O3/TiO2 Membrane. the porous 3-D Al2O3/TiO2 Membrane as a substrate was fabricated by sponge method. To fabricate the porous 3-D Al2O3 membrane, PU foam was used. By replica method, Al2O3 powder was mixed homogeneously in PEG solution and then applied to the PU foam by dip coating. After dyring process, substrate showed suitable pore size and surface roughness for fabrication of composite membrane. Pore size and coating thickness could be controlled depend on dipping steps. Pore size of Porous 3-D Al2O3 substitute was about 190µm in diameter. TiO2 nano fiber was directly coated using TiO2 slurry which contained titanium tetra isoproxide(TTIP) as TiO2 precursor. After dipping of TiO2 solution, the TiO2 coated Porous 3-D Al2O3 substrate was aged in NaOH solution to grow the TiO2 nanofibers. During the aging process, many TiO2 whiskers came out through chemical reaction. Depend on the aging time, the morphology of TiO2 whiskers was dramatically changed. The investigations depending on the aging time of Porous 3-D Al2O3 were carried out using XRD, SEM observation and EDS techniques. |
| 저자 |
Hyun-Jin Hong1, Min-Sung Kim2, Byong-Taek Lee3
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| 소속 |
1Department of Biomedical Engineering and Materials, 2School of Medicine, 3Soonchunhyang Univ. |
| 키워드 |
Sponge method; TiO2 coating; composites; TiO2 whisker; membrane
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| E-Mail |
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