| Project/Area Number |
08555234
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
高分子合成
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| Research Institution | Nagoya University |
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Principal Investigator |
OKADA Masahiko Nagoya University School of Agricultural Sciences, Biomass.Professor, 農学部, 教授 (20023103)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUSHITA Seishiro Kyowa Yuka Co.Ltd, Senior Researcher, 四日市研究所, 主任研究員
AOI Keigo Nagoya University School of Agricultural Sciences, Associate Professor, 農学部, 助教授 (30222467)
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| Project Period (FY) |
1996 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥6,200,000 (Direct Cost: ¥6,200,000)
Fiscal Year 1997: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1996: ¥5,000,000 (Direct Cost: ¥5,000,000)
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| Keywords | Carbohydrates / Biodegradable Polymers / Polyesters / Furan / Chitin / Polyoxazoline / Poly(vinyl alcohol) / Biomass |
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| Research Abstract |
A series of polyesters was synthesized by the bulk polycondensations of the combinations of 1,4 : 3,6-dianhydrohexitols with aliphatic dicarboxylic acid derivatives and with difuranic diesters, i.e., bis (5-methoxycarbonyl)-2-furyl) methane and 1,1-bis(5-methoxycarbonyl)-2-furyl) ethane. To prepare furan-containing polyesters, the polycondensations were carried out at 220-230ﾟCin the presence of titanium isopropoxide as a catalyst, giving polyesters haveing number average molecular weight up to 2.4*10^4. Soil burial tests along with enzymatic degradation experiments showed that these polyesters are potentially biodegradable.
Soil burial degradation behavior of miscible blend systems of poly (vinyl alcohol) (PVA)/chitin-graft-poly (2-methyl-1-oxazoline) and PVA/chitin-graft-poly (2-ethyl-2-oxazoline) was investigated in comparison with the case of a pure PVA film. The degradation of the hybrid films was followed by the weight changes, scanning electron microscopic (SEM) observation, FT-IR,^1H NMR,and SEC analyzes. The rate of degradation of the PVA/chitin derivative hybrids was faster than that of pure PVA in the soil burial test.
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