Journal of Sensor Science and Technology (센서학회지)
- Volume 5 Issue 4
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- Pages.71-79
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- 1996
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- 1225-5475(pISSN)
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- 2093-7563(eISSN)
In situ analysis of the dynamic characteristics of electro-chemically Polymerized Polypyrrole film using Quartz Crystal Analyzer (Q.C.A.).
Q.C.A. 에 의한 폴리피롤 전기중합막의 동특성 분석
- Chang, Sang-Mok (Dept. of Chem. Eng., College of Eng. Dong-A Univ.) ;
- Kim, Jong-Min (Dept. of Chem. Eng., College of Eng. Dong-A Univ.) ;
-
Chang, Yong-Keun
(Dept. of Chem. Eng., Kaist)
;
- Muramatsu, Hiroshi (Research Laboratory for Advanced Technology, Seiko Instruments Inc.) ;
- Ataka, Tatsuaki (Research Laboratory for Advanced Technology, Seiko Instruments Inc.)
- Published : 1996.07.31
Abstract
The mechanism of electrochemical polymerization of polypyrrole was analyzed using Q.C.A. via measuring the resonant frequency and resonant resistance of AT-cut quartz crystal, whose electrodes were fabricated with indium tin oxide by sputtering method. The quantity of polymerized polypyrrole was able to be calculated from the resonant frequency and the viscoelasticity of polypyrrole film from resonant resistance. We found that the elastic film is formed at the first stage of the polymerization, but transformed to viscoelastic film later and that this transition repeated at some point. From these results, it was confirmed that the rheological characteristics of electrochemically polymerized polypyrrole thin film can be analyzed using Q.C.A.
Indium tin oxide(ITO) 전극을 스파터링 법으로 피막시킨 9 MHz 수정진동자를 작용전극으로 사용하여 피롤을 전기화학적으로 중합시키면서, 수정진동자의 공진주파수 변화로 부터 중합량을 분석하고 공진저항의 변화로부터 막의 점탄성 변화를 분석함으로써 중합막의 유변학적 변화를 해석하였다. 본 실험에서 피롤막이 중합될 때 초기에는 탄성막을 형성하다가 점차 점탄성막으로 변화하지만 어느 순간에 다시 탄성막 점탄성막의 변화를 반복함을 확인하였다. 본 연구결과, 수정진동자를 이용하여 전기화학적 중합막의 유변학적 동특성을 중합과정에서 해석할 수 있음을 확인하였다.
Keywords