| Project/Area Number |
15K12245
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental conscious materials and recycle
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| Research Institution | Okayama University |
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Principal Investigator |
KIMURA Kunio 岡山大学, 環境生命科学研究科, 教授 (40274013)
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| Co-Investigator(Kenkyū-buntansha) |
山崎 慎一 岡山大学, 環境管理センター, 准教授 (40397873)
内田 哲也 岡山大学, 自然科学研究科, 准教授 (90284083)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | ポリ乳酸 / 重合結晶化 / 光学分割重合 / バイオプラスチック / 立体規則性 / ラクチド |
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| Outline of Final Research Achievements |
Poly(L-lactide) (PLLA) is a top runner of biodegradable plastics and the properties iss highly related to the content of unit off D-lactic acid (D-unit) in PLLA. Therefore, the content of D-unit should be strictly controlled. In this study, the new control method of D-unit in PLA was examined by the crystallization during ring-opening cationic polymerization of partial racemic lactide in solution under shearing. The content of D-unit of the precipitated polymer crystals was much lower than the content of D-unit in feed. Further, it was found that the shearing rate influenced on the content of D-unit and higher rate made the content of D-unit lower.
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