2010 Fiscal Year Final Research Report
EFFECT OF CROSSLINKED TOPOLOGY ON SHAPE MEMORY OF LIQUID-CRYSTALLINE ELASTOMERS
| Project/Area Number |
20550167
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Functional materials/Devices
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| Research Institution | Tokyo Polytechnic University |
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Principal Investigator |
HIRAOKA Kazuyuki Tokyo Polytechnic University, 工学部, 教授 (50267530)
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| Co-Investigator(Renkei-kenkyūsha) |
MATSUMOTO Toshihiko 東京工芸大学, 工学部, 教授 (50181780)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 液晶 / 高分子液晶 / 液晶エラストマー / 主鎖型高分子液晶 / 架橋剤 / 光学活性分子 / 人工筋肉 / 高分子構造・物性 |
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| Research Abstract |
Liquid-crystalline elastomers have attracted both industrial and scientific interests because of their shape memory effect caused by rubber elasticity with anisotropic molecular alignment of liquid crystalline phases. In this study, we have focused on chiral smectic C (SmC*) elastomers because of their additional structures and properties such as the helical structure and ferroelectricity owing to their chirality and local C2 symmetry. The stimuli-responsive behavior, such as the biaxial shape memory effect in thermo-mechanical responses, the electric response to mechanical excitation due to the piezoelectric and electroclinic effects, and twist deformation during the SmC*-SmA transformation, have been investigated. Additionally, we report chiral mechanical coupling between tilt and twist in SmC* elastomers.
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