Journal of Materials Science

, Volume 30, Issue 22, pp 5667–5671 | Cite as

Modification of oxidized graphite edge surface with poly(vinyl chloride)

  • M. Nakahara
  • S. Asai
  • Y. Sanada
  • T. Ueda


An oxidized edge surface of pyrolytic graphite (PG) has been prepared by electrochemical treatment. A thin layer of poly(vinyl chloride) (PVC) was coated on the oxidized edge surface, and the PVC-coated sample heat treated at 300, 400, and 500 °C, respectively. The influence of the PVC coating on the structural change of the oxidized edge surface of PG caused by the heat treatment was studied by laser Raman and Fourier transform-infrared attenuated total reflection spectroscopies. For the electrochemical treatment, the formation of oxygen-containing functional groups proceeds over the edge surface of PG. With increasing degree of oxidation, the functional groups are formed in the following order; hydroxyl groups, carboxyl groups, lactone groups, quinones, and acid anhydrides. Acid anhydrides are formed on the outermost surface and completely eliminated by heat treatment up to 300 °C. The other functional groups remain even after heat treatment up to 500 °C. However, the functional groups are eliminated by the PVC coating, the elimination temperature depending on the type of functional groups: quinones, lactone groups, and carboxyl groups are eliminated at 300, 400, and 500 °C, respectively. PVC coated on the edge surface is found to play an important role in the complete elimination of oxygen-containing functional groups with >C=O through heat treatment at 500 °C.


Heat Treatment Quinone Lactone Total Reflection Vinyl Chloride 
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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • M. Nakahara
    • 1
  • S. Asai
    • 2
  • Y. Sanada
    • 2
  • T. Ueda
    • 3
  1. 1.Faculty of EngineeringGunma UniversityGunmaJapan
  2. 2.Centre for Advanced Research of Energy TechnologyHokkaido University, N-13, W-8SapporoJapan
  3. 3.Advanced Technology Research CentreMitsubishi Heavy Industries LtdYokohamaJapan

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