| Project/Area Number |
15K17907
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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 |
Polymer/Textile materials
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
Goseki Raita 東京工業大学, 物質理工学院, 助教 (20592215)
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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 |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 力学刺激応答性高分子 / 星型高分子 / 結晶性高分子 / ラジカル / ESR測定 / メカノクロミズム / 刺激応答性高分子 / カップリング反応 / 精密合成 / 力学応答性 / 電子共鳴スピン |
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| Outline of Final Research Achievements |
In this study, various polymers having a mechano-responsive unit in the mid-chain were designed and synthesized, and their mechanochromic property was evaluated by using electron paramagnetic resonances and UV-vis spectrum. In order to investigate the effect of the mechanochromic behavior, the crystalline, amorphous, and the polymer having different glass transition temperatures were selected.
As a result, a crystalline polymer having a mechano-responsive unit showed mechanochromic behavior when it was crystallized from a melting state. In addition, it was confirmed that longer polymer chains induce mechanochemical activation more effectively and found that, in the bulk state, the star polymer has higher sensitivity to mechanical stress compared with a linear polymer having similar molecular weight arm segment.
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