| Project/Area Number |
16510068
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental technology/Environmental materials
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| Research Institution | Kanazawa Institute of Technology |
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Principal Investigator |
OSAWA Satoshi Kanazawa Institute of Technology, College of Environmental Engineering and Architecture, Professor, 環境・建築学部, 教授 (50259636)
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| Project Period (FY) |
2004 – 2006
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| Project Status |
Completed (Fiscal Year 2006)
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| Budget Amount *help |
¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2006: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2005: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2004: ¥1,300,000 (Direct Cost: ¥1,300,000)
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| Keywords | Biodegradable polymer / Poly(butylenesuccinate-adipate) / Poly(ε-caprolactone) / Antibacterial property / Surface treatment / super-hydrophobic / 抗菌性 / 溶媒処理 / 転写 / 微生物付着 / 撥水性植物 / 撥水性生分解性高分子 / 糸状菌 / 多孔質構造 / 抗菌性生分解性プラスチック |
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| Research Abstract |
The goal on this research is to prepare biodegradable polymer that have ability of recognition for microorganisms. For the purpose, we have prepared various microscopic patterns with different size on the surface of biodegradable polymers. It was fond that the polymer surface recognized fungi by controlling the micro-scale size of porous structure and regularly aligned concavity and convexity structures.
Smooth biodegradable polymer surface did not adsorb any type of fungi. On the other hand, fungi was strongly adsorbed to the concavity and convexity structure with the cross pitch of 30μm x 30μm. Producing the water repellent surface onto biodegradable polymer must result in some new functions. The antibacterial property may also be obtained by the water repellency on the biodegradable polymer surface. Among water repellent natural leaves, we have chosen a structure of aroid leaf for preparing super-hydrophobic surface on biodegradable sheet since it has high water contact angle and the concavity-pattern is thought to be enough handle for a material use. Transcribing aroid structure gave 30μm ordered concavity-pattern on biodegradable polymer surface and the solvent treatment resulted in sub-micrometer ordered roughness.
The water repellent natural leaves usually have antibacterial property due to the prevention of water. To investigate the antibacterial property, the transcribed biodegradable samples were soaked into fungus culture having isolated Asperugillus sp and E.coli. The filamentous fungus and bacteria did not grow on the transcribed surface with solvent treatment. The results suggested that combination of two ordered structures, i.e. several micrometer and sub-micrometer patterns recognize microorganisms.
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