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논문 기본 정보

자료유형
동향자료
저자정보
Zhu, Jiadeng (Carbon Convergence Materials Research Center, Institute of Advanced Composite Materials, Korea Institute of Science and Technology) Lee, Cheol-Ho (Carbon Convergence Materials Research Center, Institute of Advanced Composite Materials, Korea Institute of Science and Technology) Joh, Han-Ik (Carbon Convergence Materials Research Center, Institute of Advanced Composite Materials, Korea Institute of Science and Technology) Kim, Hwan Chul (Department of Organic Materials and Fiber Engineering, Chonbuk National University) Lee, Sungho (Carbon Convergence Materials Research Center, Institute of Advanced Composite Materials, Korea Institute of Science and Technology)
저널정보
한국탄소학회 Carbon letters Carbon letters 제13권 제4호
발행연도
2012.1
수록면
230 - 235 (6page)

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초록· 키워드

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In this study, reduced graphene oxide/polyimide (r-GO/PI) composite films, which showed significant enhancement in their electrical conductivity, were successfully fabricated. GO was prepared from graphite using a modified Hummers method. The GO was used as a nanofiller material for the preparation of r-GO/PI composites by in-situ polymerization. An addition of 20 wt% of GO led to a significant decrease in the volume resistivity of composite films by less than nine orders of magnitude compared to that of pure PI films due to the electrical percolation networks of reduced GO created during imidization within the films. A tensile test indicated that the Young's modulus of the r-GO/PI composite film containing 20 wt% GO increased drastically from 2.3 GPa to 4.4 GPa, which was an improvement of approximately 84% compared to that of pure PI film. In addition, the corresponding tensile strength was found to have decreased only by 12%, from 113 MPa to 99 MPa.

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