Journal
MACROMOLECULES
Volume 40, Issue 5, Pages 1538-1545Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ma0616054
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The dispersion of single-walled carbon nanotubes (SWNT) in poly(epsilon-caprolactone) with the aid of a zwitterionic surfactant is reported. Melt rheology and electrical conductivity measurements indicate geometrical percolation and electrical percolation for nanocomposites with similar to 0.08 wt % SWNT, implying an effective anisotropy for the nanotubes of at least 600. Spectroscopic measurements and comparison of dispersion using other surfactants established that the excellent dispersion is a result of the compatibilizing effect of the zwitterionic surfactant.
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