Conductive graphite nanoplatelet/epoxy nanocomposites: Effects of exfoliation and UV/ozone treatment of graphite

Jing Li, Jang Kyo Kim, Man Lung Sham

Research output: Contribution to journalArticlepeer-review

161 Scopus citations

Abstract

The effects of ultrasonication and UV/ozone treatment of graphite on electrical conductivity of epoxy-based nanocomposites containing graphite nanoplatelets are investigated. Ultrasonication applied at various stages of composite fabrication enhanced the exfoliation and dispersion of graphite within the matrix. A porous multi-layer graphite structure resulted in a higher electrical conductivity and poorer mechanical properties than the completely exfoliated graphite. UV/ozone treatment improved both the electrical conductivity and mechanical properties by improving the graphite-epoxy interfacial adhesion, which is attributed to ameliorating changes in graphite surface chemistry and morphology.

Original languageBritish English
Pages (from-to)235-240
Number of pages6
JournalScripta Materialia
Volume53
Issue number2
DOIs
StatePublished - Jul 2005

Keywords

  • Electrical conductivity
  • Graphite
  • Nanocomposite
  • UV/ozone treatment

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