Polymer Bulletin

, Volume 54, Issue 1–2, pp 141–145 | Cite as

Study of local oxidative degradation in polypropylene impact copolymer by energy dispersive X-ray system

  • Norio Manabe
  • Yoshimitsu Yokota
  • Hisayuki Nakatani
  • Shoutarou Suzuki
  • Liu Boping
  • Minoru Terano


In this study, the thermal oxidative degradation of a polypropylene (PP) impact copolymer was examined using a transmission electron microscope equipped with an energy dispersive X-ray system (TEM/EDX). The oxidative behavior was visually captured by oxygen line analysis. The oxidation resistance of the ethylene-propylene rubber (EPR) phase was considerably higher than that of the PP matrix, indicating that the degradation behavior of the PP impact copolymer was heterogeneous. It was found that the higher resistance of the EPR phase originated from its primary structure by 13C-NMR measurement.


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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Norio Manabe
    • 1
  • Yoshimitsu Yokota
    • 1
  • Hisayuki Nakatani
    • 2
  • Shoutarou Suzuki
    • 3
  • Liu Boping
    • 3
  • Minoru Terano
    • 3
  1. 1.Research and Evaluation CenterSumitomo Wiring Systems Co., Ltd.SuzukaJapan
  2. 2.Department of Bioengineering and Chemistry, College of Environmental Engineering and ArchitectureKanazawa Institute of TechnologyNonoichiJapan
  3. 3.School of MaterialsScience Japan Advanced Institute of Science and TechnologyTatsunokuchiJapan

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