| 학회 | 한국고분자학회 |
| 학술대회 | 2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 | 29권 2호, p.41 |
| 발표분야 | 기능성 고분자 |
| 제목 | Bending Behavior of CP Actuator based on Polypyrrole and Solid Polymer Electrolyte Working in Air |
| 초록 | Conducting polymers (CPs), such as polypyrrole, polythiophene and polyaniline, are unique in that they have switchable properties due to their two or more mechanically stable oxidation state. Thus, their films or coatings can be easily switched by the application of small voltage and current to change volume during their electrochemical redox process. In particular, polypyrrole (PPy) has been studied most extensively because of its high electrical conductivity and good environmental stability under ambient condition.1, 2 In this work, we have studied a new CP actuator, fully polymeric, assembled with two PPy film electrodes and a solid polymer electrolyte (SPE), polyurethane/Mg(ClO4)2. .Polyurethanes (PUs) were synthesized from 4,4'-methylene bis(phenyl isocyanate) (MDI), 1,4-butanediol (1,4-BD) and three types of polyols, poly(propylene glycol) (PPG), poly(ethylene glycol) (PEG) and PPG-block-PEG-block-PPG (PPG-co-PEG). Chemically synthesized PPy was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and 4-probe technique. From Figure 1 it could be confirmed that PPy coating layer and electrolyte layer had good adhesion. The chemical polymerization of PPy by immersion in Py monomer aqueous solution and oxidant aqueous solution is an adequate method to prepare PU/PPy composite film as actuator. The morphology and ionic conductivity of these electrolytes were studied by using differential scanning calorimetry (DSC), Fourier transform-infrared spectroscopy (FT-IR) and alternative current (AC) impedance measurements. To find the proper thickness of PPy coating layer for actuation, we measured the displacement of actuators according to the thickness of PPy coating layer (See Figure 2). And, the displacement of all actuators was discussed in connection with the properties of SPE and PPy. All the results obtained in this work show the feasibility of electrochemomechanical devices based on PPy and SPE film able to work in air. Fig. 1. Cross-section of CP actuator. Fig. 2. Displacement according to the thickness of PPy coating layer REFERENCES 1.A. Bozkurt, U. Akbulut, L. Toppare, Synthetic Metals, 82, 41-46 (1996). 2.H. Okuzaki, T. Kuwabara, T. Kunugi, J. Polym. Sci.: Part B: Polymer Physics, 36, 2237-2246 (1998). |
| 저자 | 최화정, 정해도, 이장우, 조남주 |
| 소속 | 부산대 |
| 키워드 | Polypyrrole; Solid polymer electrolyte; Actuator |
