| Project/Area Number |
19750188
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Polymer/Textile materials
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| Research Institution | Ibaraki National College of Technology |
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Principal Investigator |
MIYASHITA Yoshiharu Ibaraki National College of Technology, 物質工学科, 准教授 (00293259)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
|
| Budget Amount *help |
¥3,950,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥750,000)
Fiscal Year 2009: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2008: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2007: ¥700,000 (Direct Cost: ¥700,000)
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| Keywords | キチン / キトサン / ポリ乳酸 / ラクチド / グラフト共重合 / 乳酸 |
|---|
| Research Abstract |
Graft copolymers based on chitin, chitosan and their derivatives were synthesized as environmentally conformable polymeric materials. Chitin-graft-poly(lactic acid) and chitosan- graft-poly(lactic acid) were obtained via ring-opening graft copolymerization of lactide onto polysaccharides. However, the molar substitution (MS) of these copolymers, defined as an average number of introduced lactil units, were so low that physical properties of chitin and chitosan were not improved. On the other hand, phthaloyl chitosan-graft-poly(lactic acid) having comparatively high value of lactyl MS was successfully synthesized. For this copolymer, several marked changes in physical properties, such as solubility and thermal transition behavior, were confirmed.
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