Morphology and Properties of Polyester/Exfoliated Graphite Nanocomposites
作者： Hyunwoo Kim , Christopher W. Macosko
DOI: 10.1021/MA702385H
关键词:
摘要: Nanocomposites reinforced with graphite platelets were compared to those functionalized sheets (FGS) prepared by partial pyrolysis of oxide. Melt dispersion in poly(ethylene-2,6-naphthalate) (PEN) was quantified using a range characterization techniques: electron microscopy, X-ray scattering, melt rheology, electrical conductivity, gas barrier, and mechanical properties. Conductivity percolation obtained as little 0.3 vol % FGS, whereas 3 required for graphite. The threshold concentrations FGS rigidity determined rheology good agreement conductivity percolation. Hydrogen permeability PEN 4 wt decreased 60% while the same amount reduced only 25%. Structural differences between characterized atomic force microscopy (AFM), Raman spectroscopy, photoelectron spectroscopy (XPS). highly exfoliated morphology mainta...
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