| Project/Area Number |
11217213
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Toyo University |
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Principal Investigator |
YOSHIDA Yasuhiko Toyo University, Faculty of Engineering, Professor, 工学部, 教授 (80134500)
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| Co-Investigator(Kenkyū-buntansha) |
FUKUSHIMA Yasumasa Toyo University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (30328645)
ISHII Shigeru Toyo University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (50245932)
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| Project Period (FY) |
1999 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥16,100,000 (Direct Cost: ¥16,100,000)
Fiscal Year 2002: ¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2001: ¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2000: ¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 1999: ¥5,100,000 (Direct Cost: ¥5,100,000)
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| Keywords | Polymer synthesis / Chitin / Chitosan / Polypeptide / Enzyme / Aliphatic polyester / 酵素 / PHA / キチン / キトサン / 酵素重合 / グラフト重合 / 環境低負荷高分子 / ラクトン / 複合材料 / 酵素分解性 / 酵素触媒 |
|---|
| Research Abstract |
The Chitin-and Chitosan-graft-aliphatic polyesters, in which both the stem and the graft are biodegradable, were synthesized for the first time in one pot by the lipase-catalyzed graft polymerization of β-butyrolactone (β-BL) and ε-caprolactone (ε-CL) onto chitin and chitosan. The reactivity orders of the natural polymers and lactones were found to bechitosan>chitin=ε-CL>β-BL>>γ-BL (no reaction). All the graft polymers prepared were swollen in organic solvents, such as chloroform.
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