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Rheological characterization of carbon nanotubes/poly(ethylene oxide) composites

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Abstract

Rheological properties of poly(ethylene oxide) nanocomposites embedded with carbon nanotubes (CNTs) were investigated in the present study. It was found that the CNT nanocomposites had a higher effective filler volume fraction than the real filler volume fraction, which yielded a drastic enhancement of shear viscosity. As the CNT loading in the nancomposites increases, non-Newtonian behavior was observed at the low-shear-rate region in the steady shear experiments. Oscillatory dynamic shear experiments showed that more addition of the CNTs led to stronger solidlike and nonterminal behaviors. To identify a dispersion state of the CNTs, field emission scanning electron spectroscopy and transmission electron microscopy were adopted and thermal analysis was also performed by using differential scanning calorimetry. The existence of percolated network structures of the CNTs even at a low CNT loading was verified by rheological properties and electrical conductivities.

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  1. Center for Composite Materials, University of Delaware, Newark, DE, 19716, USA

    Young Seok Song

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  1. Young Seok Song
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Correspondence to Young Seok Song.

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Song, Y.S. Rheological characterization of carbon nanotubes/poly(ethylene oxide) composites. Rheol Acta 46, 231–238 (2006). https://doi.org/10.1007/s00397-006-0137-8

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  • DOI: https://doi.org/10.1007/s00397-006-0137-8

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