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Preparation and Characterization of Vapor-Grown Carbon Nanofibers-Reinforced Polyimide Composites by in-situ Polymerization  

Park, Soo-Jin (Department of Chemistry, Inha University)
Lee, Eun-Jung (Advanced Materials Division, Korea Research Institute of Chemical Technology)
Lee, Jae-Rock (Advanced Materials Division, Korea Research Institute of Chemical Technology)
Won, Ho-Youn (Hanwha Chemical Research & Development Center)
Moon, Doo-Kyung (Department of Materials Chemistry, Konkuk University)
Publication Information
Polymer(Korea) / v.31, no.2, 2007 , pp. 117-122 More about this Journal
Abstract
In this work, the mechanical and electrical properties, and thermal stability of vapor-grown carbon nanofibers/polyimide (VGCNFs/PI) composite film synthesized by in-situ polymerization were investigated in terms of tensile properties, volume resistivity and thermogravimetric analysis (TGA), respectively. From the results, the addition of VGCNFs with a certain amount into polyimide led to obvious improvement in tensile strength. The volume resistivity of the films was decreased with increasing the VGCNFs content and the electrical percolation threshold appeared between 1 and 3 wt% of VGCNFs content, which was probably caused by the formation of interconnective structures among the VGCNFs in a composite system. The thermal stability of the film was higher than that of pure PI one. This result indicated that the crosslinking of VGCNFs/PI Composites was enhanced by well-distribution of YGCNFs in PI resin, resulting in the increase of the thermal stability of the resulting composites.
Keywords
vapor grown carbon nanofibers; polyimide; volume resistivity; thermal stabilities;
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