| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 | 30권 1호, p.107 |
| 발표분야 | 기능성 고분자 |
| 제목 | Manufacturing the bimorph-type conductive polymer(CP) actuator using molecular self-assembly |
| 초록 | Polypyrrole is one of the useful conductive polymers that are widely used in biosensors and electronics1. Conductive polymer(CP) actuator has been intensively studied because of large displacement at low voltage(3~5V) and their potential applications. The source of its bending actuation is the volume changes that take place during their electrochemical oxidation/reduction process. These volume changes are due to the attraction/repulsion of ions and solvent into/from the polymeric electrolyte during its oxidation/reduction process2. In general, many works have used electropolymerization to make a CP layer upon a thin polymer film sheets which never change their volume but it is hard to control the thickness of CP using this method. In order to increase the thickness of CP and improve the interfacial adhesion and overcome delamination problem between insulating layer and conductive polymer layer, In- suit polymerization using molecular self-assembly which is a charge interaction between sulfonic acid groups and oxidized pyrrole monomer in aqueous solution was utilized. In this work, radiation grafted and sulfonated poly(vinylidene fluoride) is used as non-conductive polymer(no volume-change film). Fig.1 shows the procedure for the fabrication of PPy/sulfonated PVDF-g-PS actuator. The degree of grafting and surface-sulfonation was determined by the change of both weight and ionic groups. The properties of prepared membrane and actuator were characterized by EDS, FT-IR and FE-SEM. The behaviors of the bimorph actuators were characterized by using laser displacement meter. According to the increase of radiation dose, grafting time and sulfonic acid groups of membrane surface, both thickness of CP and the displacement of the actuators were investigated. Fig. 1. Procedure for fabrication of PPy/sulfonated PVDF-g-PS actuator Reference 1. C.M. Li, C.Q. Sun, W. Chen, L. Pan, Surface & Coating Technology, in press, 2004. 2. B. C. Yoseph, Electroactive Polymr Actuators as Artificial Muscles, SPIE press, 2001, pp 198. |
| 저자 | 왕혁식, 한만재, 이장열, 김민정, 조재영 |
| 소속 | 서울대 |
| 키워드 | conductive polymer; polypyrrole; actuator |
