Journal of Materials Science

, Volume 26, Issue 4, pp 861–864 | Cite as

Anodic oxidation effects on pyrolytic graphite surfaces in acid

  • M. Nakahara
  • Y. Nakayama
  • G. Katagiri
  • K. Shimizu


Anodic oxidation effects on the basal and edge surfaces of pyrolytic graphite in acid were studied by laser Raman spectroscopy, and by a gas-phase chemical modification method coupled with X-ray photoelectron spectroscopy. Surface covering fractions were also studied by α-epichlorohydrin monolayer formation. It was found that the species of surface chemical groups added by anodic oxidation was closely related to the structure of the oxidized surface. In the case of the basal surface, carboxyl groups were added by anodic oxidation, being always accompanied by the destruction of its surface structure. On the other hand, in the case of the edge surface, hydroxyl groups were added without the destruction of its structure with a mild treatment. With more severe treatment, carboxyl groups were added and this addition was also accompanied by destruction of the surface structure. There was a range of treatment in which hydroxyl groups could be added without destroying the structure. Finally it was confirmed that both carboxyl and hydroxyl groups could make covalent bonds with epoxy groups of α-epichlorohydrin.


Epoxy Raman Spectroscopy Surface Structure Anodic Oxidation Surface Chemical Group 
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Copyright information

© Chapman and Hall Ltd 1991

Authors and Affiliations

  • M. Nakahara
    • 1
  • Y. Nakayama
    • 1
    • 2
  • G. Katagiri
    • 1
    • 2
  • K. Shimizu
    • 1
  1. 1.Toray Industries, Inc.ShigaJapan
  2. 2.Toray Research Center, Inc.ShigaJapan

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