| Project/Area Number |
11555248
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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 | Chubu University (2000)
Nagoya University (1999) |
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Principal Investigator |
OKADA Masahiko Chubu University, Res.Inst.for Biol.Funct., Professor, 生物機能開発研究所, 教授 (20023103)
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| Co-Investigator(Kenkyū-buntansha) |
ITOH Katsuhito Aicero Chemical Company, Researcher, 研究員
青井 啓悟 名古屋大学, 生命農学研究科, 助教授 (30222467)
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥6,200,000 (Direct Cost: ¥6,200,000)
Fiscal Year 2000: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1999: ¥5,000,000 (Direct Cost: ¥5,000,000)
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| Keywords | biodegradability / polyester / biopolymer / dianhydroglucitol / blend / poly (vinyl alcohol) / furan / chitin / ポリマーブレンド / DNA / オキサゾリン |
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| Research Abstract |
1. Synthesis and Biodegradability of Novel Aromatic Polyesters Based on Sugars
A series of copolyesters containing furan moieties were synthesized by polycondensation of 1, 4 : 3, 6-dianhydro-D-glucitol derived from D-glucose, 1, 1-bis (5-methoxycarbonyl-2-furyl) ethane derived from furfural, and several aliphatic dicarboxylic acid methyl esters in bulk at 210-220℃. Copolyesters with number average molecular weights up to 2x10^4 were obtained in high yields. Different correlation was found between the enzymatic degradability and the structures of these copolyesters depending on the enzymes. Degradation tests in antibiotic-treated soil disclosed that actinomycetes were mainly responsible for the biodegradation of these furan-containing copolyesters in soil.
2. Miscibility and Biodegradability of Polymer Hybrids Containing Proteins, Nucleic Acids, or Sugars
Blends of different compositions were prepared from chitin-graft-poly (2-methyl-2-oxazoline) and poly (vinyl alcohol). All these blends were found to be miscible by differential scanning calorimetry. Soil burial degradation tests showed that the blend films were more readily degraded than a pure PVA film and that bacteria and actinomycetes are responsible for the biodegradation. For PVA-polysarcosine blends, a small amount of polysarcosine enhanced the thermal stability of PVA.For blends of PVA and DNA from salmon testes, the DNA chains formed double helices in a PVA matrix, their conformation being dependent upon the PVA content.
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