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Charge Transport Phenomena of Polyaniline-DBSA/Polystyrene Blends  

김원중 (고려대학 재료학과)
김태영 (고려대학 재료학과)
고정우 (고려대학 재료학과)
김윤상 (고려대학 재료학과)
박창모 (고려대학 재료학과)
서광석 (고려대학 재료학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.53, no.6, 2004 , pp. 305-311 More about this Journal
Abstract
Charge transport phenomena of polyaniline-DBSA/High Impact Polystyrene (PAM-DBSA/HIPS) blends have been studied through an examination of electrical conduction. HIPS used host polymer in the blends and PANI-DBSA obey a space charge limited conduction mechanism and a ohmic conduction mechanism respectively. However, PANI-DBSA/HIPS blends do not obey any classical conduction mechanism. Analysis of conduction mechanism revealed that the charging current of PANI-DBSA/HIPS blends increased with the increase of PANI-DBSA content. This result migrlt be explained by the reduction in the distance between PANI-DBSA particles enabling the charge carriers to migrate from a chain to a neighboring chain via hopping or micro tunneling. It was also found that the charging current of PANI-DBSA/HIPS blends decreased as the temperature was elevated, which is of typical phenomena in metals. It is speculated that the charge transport in PANI-DBSA particle was somewhat constrained due to strong phonon scattering.
Keywords
폴리아닐린;폴리스타이렌;블렌드;전도 메커니즘;
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