Carbonization of polyacrylonitrile in a two-dimensional space between montmorillonite lamellae

Naohiro Sonobe, Takashi Kyotani, Akira Tomita

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)


A novel method to prepare a new type of carbon from polyacrylonitrile (PAN) was developed by using the interlamellar opening of montmorillonite (MONT) as a two-dimensional space for carbonization. The complex of MONT with PAN was heat treated at 700°C to carbonize the intercalated PAN. The carbon produced was liberated from MONT by acid treatments. The carbon thus obtained looks like thin films under a scanning electron microscope and is considered to consist of planar macromolecules. Although it has a turbostratic structure at 700°C, it becomes a highly oriented graphite upon further heat treatment above 2500°C. An ordinary PAN was also prepared and heat treated for comparison.

Original languageEnglish
Pages (from-to)573-578
Number of pages6
Issue number4
Publication statusPublished - 1988


  • Carbonization
  • montmorillonite
  • polyacrylonitrile (PAN)
  • two-dimensional carbon

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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