Improving the Dispersion and Integration of Single-Walled Carbon Nanotubes in Epoxy Composites through Functionalization

Considerable improvement in the dispersion of purified single-walled carbon nanotubes in an epoxy composite was obtained through functionalization of the SWNTs by using an optimized H2SO4/70% HNO3 acid treatment and subsequent fluorination

Jiang Zhu; JongDae Kim; Haiqing Peng; John L. Margrave; Valery N. Khabashesku; Enrique V. Barrera

2003

Scholarcy highlights

  • Considerable improvement in the dispersion of purified single-walled carbon nanotubes in an epoxy composite was obtained through functionalization of the SWNTs by using an optimized H2SO4/70% HNO3 acid treatment and subsequent fluorination
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  • Epoxy composites containing 1 wt % nanotubes were processed by dissolving the functionalized SWNTs in dimethylformamide and mixing with the epoxy resin thereafter
  • This work demonstrates the practical use of combining acid treatment and fluorination to achieve functionalization and unroping of SWNTs
  • The enhancement of mechanical properties of the latter was indicated by a 30% increase in modulus and 18% increase in tensile strength
  • The functionalized SWNTs can be integrated into epoxy composites through the formation of strong covalent bonds in the course of epoxy ring-opening esterification and curing chemical reactions
  • Mathematical Methods in the Applied Sciences2022,45 , 6325-6345

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