| Project/Area Number |
24540432
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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 |
Biophysics/Chemical physics
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| Research Institution | Yokohama National University |
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Principal Investigator |
Tanaka Yoshimi 横浜国立大学, 環境情報研究科(研究院), 准教授 (10315830)
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| Co-Investigator(Renkei-kenkyūsha) |
Yamaguchi Tetsuo 九州大学, 工学府, 准教授 (20466783)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | ゲル / 破壊 / 溶媒効果 / ソフトマター / mechano-chemical / fracture / gel |
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| Outline of Final Research Achievements |
Tearing experiment was conducted on an acrylamide gel synthesized from aqueous monomer solution to investigate how fracture behaviors are modified by pouring several solvents into crack tips. 1) Pouring of water, a good solvent of polyacrylamide, reduces the tearing force F for low crack velocities V. 2) For pouring of good solvent different from water, such as ethylene glycol and glycerol, enhancement of F occurs for a large V region, but this effect disappears for lower V. 3) Pouring of poor solvent for polyacrylamide, such as ethanol, causes a stick slip-like crack propagation in the whole V range in the experiment, and the time average of F is larger than that in air or in other solvents.
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