화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터)
권호 44권 2호
발표분야 기능성 고분자
제목 Reversible 3D Shape Shifting of Mechanically Programmed Liquid Crystal Elastomers by Solventless Processing: Bulk and Microstructured Actuation
초록 Macroscopically-aligned liquid crystalline elastomer (LCE) monoliths can exhibit reversible and complex shape changes triggered by external stimuli such as heat, light and chemical exposure. Molecular alignment of LCEs is the key to enable reversible and complex shape transformations at the macro- and microscale level. Here, we explore different alignment methods including surface and mechanical alignment as well as imprinting process and demonstrate various 3D shape changing behaviors of LCEs at the macro- and microscale upon heating. Interestingly, the thermal actuation temperature of the LCEs was significantly altered depending on the alignment methods employed, even with the LCEs containing the same type of alignment. Such difference is probably associated with different order parameter in the initial LCEs. We envision that our facile shape programming methods with tailored properties may facilitate potential applications of the LCEs in soft robot and haptic devices.
저자 이지은, 안석균, 궈위엔항
소속 부산대
키워드 Liquid crystalline elastomer; actuators; soft robotics
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