| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 | 30권 1호, p.636 |
| 발표분야 | 기능성 고분자 |
| 제목 | Preparation and Characterization of Salt-Type Polymer Electrolytes Based on PEG-co-PPG-PU |
| 초록 | Solid polymer electrolytes based on poly(ether urethane) complexed with LiClO4 salt were prepared by the solution casting method. The poly(ethylene glycol)-co-poly(propylene glycol) polyurethane (PEG-co-PPG-PU) materials were synthesized with a typical two-step condensation reaction. The effects of the salt concentration on the ionic conductivity and glass transition temperature (Tg) of the complex electrolytes were investigated by using the alternating current (a.c.) impedance spectroscopy and differential scanning calorimetry (DSC). The ionic conductivity of PEG-co-PPG-PU complex was found to be much higher than previously reported1 that of PEG-PU complex. On the contrary, Tg of PEG-co-PPG-PU complex was found to be much lower than that of PEG-PU complex. These would be due to the reduction of crystal region of polymer matrix by the random copolymerization that would be increase mobility of salt ions and amorphous region. Fig. 1. Ionic conductivity (σ) at room temperature Fig. 2. Tg as a function of [O]/[Li+] ratio. temperature as a function of [O]/[Li+] ratio. 참고문헌 1. P. H. Huh, M. G. Choi, N. J. Jo, J. K. Lee, J. O. Lee, Macromolecular Research, 12, 422 (2004) |
| 저자 | 지상운, 조남주, 이장우 |
| 소속 | 부산대 |
| 키워드 | poly(ether urethane); solid polymer electrolyte |
