| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 | 30권 1호, p.638 |
| 발표분야 | 기능성 고분자 |
| 제목 | Polymer Electrolytes Based on Poly(ethylene glycol) and Cyanoresins For Actuator |
| 초록 | Polymer electrolytes have been widely investigated because their potential application for high energy density rechargeable batteries, since Wright1 reported ionic conductivity for the mixture of poly(ethylene oxide) (PEO) and alkali metal salt. In this research, the polymer electrolytes based on the mixed polymer matrix consisting of poly(ethylene glycol) (PEG) and cyanoresin (CRM) containing the lithium salt were prepared by in situ blending method. The ionic conductivity of the PEG/LiClO4 complexes with various salt concentrations and the temperature dependence of the ionic conductivity for the polymer electrolytes were studied. As shown in Fig. 1, the PEG/LiClO4 complexes exhibited the highest ionic conductivity at the salt concentration of 1.5 M. In addition, the mixed plasticizer composed of ethylene carbonate (EC) and propylene carbonate (PC) with molar ratio of 1:1 was incorporated into the PEG/LiClO4 to enhance the ionic conductivity of the polymer electrolytes. The PEG/LiClO4/EC-PC exhibited the highest ionic conductivity of ∼10-4S/cm at the plasticizer content of 30wt%. However, the prepared polymer electrolytes exhibited poor mechanical properties. In general, the actuator based on conductive polymers should have fairly good mechanical property sustaining the continuous bending movements when a voltage is applied. For this reason, the mixed polymer matrix consisting of the PEG and CRM were prepared by in situ blending method to improve the mechanical properties of the polymer electrolytes without scarifying the ionic conductivity. The presence of the CRM component enhanced the mechanical properties of the polymer electrolytes. As shown in Fig. 2, the highest ionic conductivity exhibited at CRM content of 15wt%. From the above result, we expect that the fabrication of the polymer electrolytes with good ionic conductivity and high mechanical properties makes it possible to realize their application as the electrolyte membrane to establish polymer actuator. Fig. 1. Salt concentration dependence on ionic Fig. 2. CRM contents dependence on ionic conductivity of PEG/LiClO4 at different tempe- conductivity of PEG-CRM/LiClO4/EC-PC rature at different temperature Reference [1] Wright P.V., British Polymer Journal, 7, 319 (1975) |
| 저자 | 최지형1, 김성훈1, 오경화2 |
| 소속 | 1한양대, 2중앙대 |
| 키워드 | actuator; cyanoresin; electrolyte |
