| Project/Area Number |
17K15293
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Wood science
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| Research Institution | Doshisha University |
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Principal Investigator |
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| Project Period (FY) |
2017-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | イオン液体 / セルロース / 溶解度 / X線散乱 / 溶解 |
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| Outline of Final Research Achievements |
Unlike conventional visual observation, we employed spectroscopic techniques to determine cellulose solubility in ionic liquid at the molecular level. What we obtained in this research is summarized as follows. 1. At the molecular level some ionic liquids dissolve cellulose at the concentration of nearly 40%, which is mostly twice higher than the previous results. 2. The origin of the high solubility would stem from the “anion bridging” where an anion bridges two cellulose chain via multiple hydrogen bondings. 3. Some ionic liquids form co-crystal with cellulose, which has been observed here for the first time.
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| Academic Significance and Societal Importance of the Research Achievements |
研究成果の概要と対応して、以下の3つが挙げられる。①分子レベルでは、従来よりも高い濃度でセルロースを溶解できるということは、イオン液体を用いたセルロースプロセスにおいて、高価なイオン液体を従来よりも削減できることを意味し、その実現性を前進させた。②アニオン架橋現象の重要性が発見されたことは、これがセルロース溶解型イオン液体の新しい分子設計の指標になることを意味する。③共結晶の発見は、セルロース／イオン液体の新しい分野の開拓を示唆する。
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