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

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

SummaryIn 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 resist...

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Veröffentlicht in:Polymer bulletin (Berlin, Germany) Germany), 2005-05, Vol.54 (1-2), p.141-145
Hauptverfasser: Manabe, Norio, Yokota, Yoshimitsu, Nakatani, Hisayuki, Suzuki, Shoutarou, Boping, Liu, Terano, Minoru
Format: Artikel
Sprache:eng
Schlagworte:
Copolymers
Degradation
Dispersion
NMR
Nuclear magnetic resonance
Oxidation resistance
Polypropylene
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Zusammenfassung:SummaryIn 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.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-005-0370-9