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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
Papers

Abstract

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.

Keywords

Heat Treatment Quinone Lactone Total Reflection Vinyl Chloride 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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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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