2022 Fiscal Year Final Research Report
Elucidation of the mechanism of active hole phenomena in dissolution process of ionic liquids
Project/Area Number |
20K03884
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 13040:Biophysics, chemical physics and soft matter physics-related
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Research Institution | Osaka Metropolitan University (2022) Osaka Prefecture University (2020-2021) |
Principal Investigator |
Oikawa Noriko 大阪公立大学, 大学院工学研究科, 准教授 (40452817)
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Project Period (FY) |
2020-04-01 – 2023-03-31
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Keywords | 界面不安定性 |
Outline of Final Research Achievements |
In this study, we have conducted experiments on quasi-one-dimensional systems with restricted spatial degrees of freedom to investigate the fundamental dynamics and properties of AH. The phase diagram of the dissolution process was obtained using the mole fraction of ethanol as a control parameter, and the behavior in the transition region from partial dissolution with an interface to full dissolution with diffusive dissolution was investigated. In addition, experiments using ionic liquids mixed with tracers revealed that AH formation is accompanied by the flow in the ionic liquid droplet. Based on the experimental results, we proposed a mechanism of AH formation and attempted to explain the AH appearance and its oscillations in terms of the interaction of three-component systems.
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Free Research Field |
ソフトマター物理
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Academic Significance and Societal Importance of the Research Achievements |
イオン液体と水の相分離を利用した物質分離操作はイオン液体の重要な応用の一つであり、本研究の成果はイオン液体の応用研究へ貢献することが期待される。イオン液体は構成分子の種類や極性によって物性を制御することが可能であり、この自由度によって溶解現象の多様性および3成分系の相分離の臨界現象における新たな側面が明らかになった。AH現象は物質流が液滴のトポロジーを変化させるマクロな力に変換される化学モーターとみなすことができる。したがって、穴の生成の前駆現象となる不安定性を制御することが可能となれば、液滴を用いたアクチュエータなどの創成につながることが期待できる。
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