Study of solvent water in the amorphized tetrahydrofuran-clathrate-hydrate from a view point of water polyamorphism
| Project/Area Number |
25400432
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Biological physics/Chemical physics/Soft matter physics
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
Suzuki Yoshiharu 国立研究開発法人物質・材料研究機構, 表界面構造・物性ユニット, 主幹研究員 (90236026)
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| Co-Investigator(Renkei-kenkyūsha) |
MISHIMA Osamu 国立研究開発法人、物質・材料研究機構, 表界面構造・物性ユニット, フェロー (10133141)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 水 / ポリアモルフィズム / クラスレートハイドレート / テトラヒドロフラン / アモルファス氷 / ガラス転移 / 圧力誘起アモルファス化 / 水のポリアモルフィズム |
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| Outline of Final Research Achievements |
The pressure-induced amorphization of tetrahydrofuran-clathrate-hydrate, THF-CH, and the polyamorphic transition of the amorphized THF-CH were studied. The effect of the existence of THF molecules on the polyamorphic state of solvent water was discussed from a viewpoint of water polyamorphism. It is found that the THF molecules unstabilize the HDA-like structure of solvent water and stabilize the LDA-like structure. This result suggests that the water polyamorphism relates deeply to the formation of clathrate structure and the segregation of aqueous solution at low temperatures.
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Report
(4 results)
Research Products
(25 results)
