| Project/Area Number |
26620179
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Polymer/Textile materials
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| Research Institution | Kyoto Institute of Technology |
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Principal Investigator |
Urayama Kenji 京都工芸繊維大学, 材料化学系, 教授 (20263147)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 液晶高分子 / 高分子液晶 / 液晶 / ゴム / エラストマー / アクチュエータ |
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| Outline of Final Research Achievements |
Polydomain liquid crystal elastomers fabricated by cross-linking in the isotropic state (I-PLCE) have randomly oriented local directors which respond sharply to external fields. Thermally driven elongation/contraction is expected for I-PLCE under finite loading despite the initial random orientation, because I-PLCE forms monodomain alignment along the loading axis due to the soft elasticity. We have demonstrated experimentally a finite degree of thermal actuation (ca. 50% strain as a maximum) occurs in the two types of I-PLCEs, i.e., polyacrylate-based side-chain type, and polysiloxane-based main-chain type. I-PLCEs have a strong advantage that they need no care for the liquid crystal alignment in the cross-linking reaction in contrast to the monodomain LCEs with initial global director.
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