| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Photomechanical deformation of electrically conducting azo-LCN/rGO composites |
| 초록 |
Liquid crystalline polymers are capable to program actuations upon external stimuli owing to their anisotropic and pre-programmable natures. Azobenzene functionalized liquid crystalline polymer networks (azo-LCNs) can be remotely deformed by light irradiation through the photoisomerization of azo groups. However, weak mechanical properties of the azo-LCNs have limited applications. Herein, we prepared azo-LCNs along with linearly patterned reduced graphene oxide (rGO) and polydopamine (PDA) to enhance the mechanical property and electrical conductivity. In this presentation, we report 4-fold increase in storage modulus of the azo-LCNs/rGO. Remarkably, the electrical conductivity of the azo-LCNs/rGO composites reached 40 S/cm after reduction of electrically insulating azo-LCNs/GO. In addition, reversible and drastic decrease in storage modulus of the stiff azo-LCNs/rGO composites is achieved by a photothermal temperature elevation above the Tg in conjunction with photosoftening effects. |
| 저자 |
조웅비1, 전지수1, 엄원식2, 한태희2, 위정재1
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| 소속 |
1인하대, 2한양대 |
| 키워드 |
Liquid crystalline polymer networks; Reduced graphene oxide
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| E-Mail |
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