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- W2024991870 abstract "서로 다른 CNF(탄소 나노섬유) 함유량을 가진 신 재료인 CNF/폴리피롤(PPy) 복합재료 필름들이 세계 최초로 화학적 전해 중합법으로 제조 되었다. 기존의 물리적 혼합법으로 제조된 필름과 비교하면 재료의 유연성이 매우 증가하였다. 복합재료와의 비교를 위해서 순수 폴리피롤 필름 역시 전해중합 방법으로 제조되었다. 전자주사현미경(SEM)으로 재료 샘플의 전극면, 용액면, 단면을 각각 촬영하여 그 재료 특성을 분석하였다. 각 복합재료 샘플의 전기전도성은 4점 탐침법으로 측정 되었다. 각 필름의 전도성은 두께가 0.013cm인 순수 PPy 필름은 79.33S/cm, 두께가 0.018cm이고 CNF 함유량 5% CNF/PPy 필름은 93S/cm, 두께가 0.017cm이고 CNF 함유량 10% CNF/PPy 필름은 126S/cm으로 측정되었다. CNF의 함유량이 증가할수록 PPy의 전도성이 크게 증가하는 것으로 확인되었으며, CNF/PPy 복합재료의 좋은 전도성은 소형의 굽힘 작동기로 사용될 수 있는 가능성을 높인다. 이를 입증하기 위해서 공기 중에서 작동 가능한 PPy 굽힘 센서를 설계하여 유한요소법으로 해석하였다. A new material, carbon-nanofiber/polypyrrole (CNF/PPy) composite films, with different CNF weight ratios were fabricated electrochemically. Compared to the fabrication process based on simple physical mixing, the flexibility of the new film has been improved much better than the previous similar material. Pure PPy films were also fabricated by the new electrochemical process for the comparison of difference. Several SEM images were taken at two locations (electrode-side and solution-side) and at the cross section of the samples. Electrical conductivity of the composite films was measured by the four-probe method. The conductivity of the pure PPy film 0.013cm thick was 79.33S/cm. The CNF/PPy composite film with 5% CNF showed a conductivity of 93S/cm. One with 10% CNF showed a conductivity of 126 S/cm. The conductivity of PPy improves, as the CNF weight ratio increases. The good conductivity of CNF/PPy composites makes them a candidate for a small bending actuator. A bending sensor consists of PPy and PVDF, which can be operated in the air, was designed and the bending deflection was calculated using FEM." @default.
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- W2024991870 date "2010-06-30" @default.
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- W2024991870 title "Variations in Electrical Conductivity of CNF/PPy Films with the Ratio of CNF and Application to a Bending Sensor" @default.
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- W2024991870 doi "https://doi.org/10.7234/kscm.2010.23.3.031" @default.
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