Polyacrylonitrile (PAN) containing 10 wt.-% single-walled carbon nanotubes (SWNTs) exhibit a 100% improvement in tensile modulus and reduced thermal shrinkage and polymer solubility. A 40degreesC increase in glass transition temperature as compared to the control PAN fiber is also observed (see Figure). SWNT anisotropy has been observed using infrared spectroscopy.
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