期刊
MACROMOLECULAR MATERIALS AND ENGINEERING
卷 296, 期 5, 页码 434-443出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.201000341
关键词
carbon nanofibers; conductivity; nanocomposites; poly(propylene); rheological behavior
资金
- Lamar University
- Texas State University San Marcos
CNF-reinforced PP nanocomposites were fabricated from CNFs dispersed in a boiling PP/xylene solution. Their thermal properties were characterized by TGA and DSC and shown to exhibit improved thermal stability and higher crystallinity. They were further processed into thin films by compression molding. The electrical conductivity and dielectric property of the PP/CNF nanocomposite thin films were studied. Both electric conductivity and real permittivity increased with increasing fiber loading. Electrical conductivity percolation is observed between 3.0 and 5.0 wt.-% fiber loading. The rheological behavior of the nanocomposite melts were also investigated. It was found that a small fiber concentration affects the modulus and viscosity of PP melt significantly.
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