Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
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Physical and Rheological Properties of Thermoplasticized Crosslinked-Polyethylene Foam in Supercritical Methanol

  • Cho, Hang-Kyu (Hybrid Materials Research Center, Korea Institute of Science and Technology (KIST)) ;
  • Hong, Soon-Man (Hybrid Materials Research Center, Korea Institute of Science and Technology (KIST)) ;
  • Baek, Kyung-Yeol (Hybrid Materials Research Center, Korea Institute of Science and Technology (KIST)) ;
  • Koo, Chong-Min (Hybrid Materials Research Center, Korea Institute of Science and Technology (KIST)) ;
  • Lee, Hong-Shik (School of Chemical and Biological Engineering & Institute of Chemical Processes, Seoul National University) ;
  • Lee, Youn-Woo (School of Chemical and Biological Engineering & Institute of Chemical Processes, Seoul National University)
  • Published : 2009.12.25
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Abstract

The physical and rheological properties of thermoplasticized irradiation-crosslinked polyethylene foam using supercritical methanol treatment were investigated by GPC, FTIR, DSC, WAXS, DMTA and UDS. The polyethylene foam was selectively decrosslinked into thermoplasticized polyethylene in an appropriate supercritical methanol condition without any undesirable side reactions such as oxidation and disproportionation. The thermoplasticization was promoted with increasing reaction temperature to reach completion above $380^{\circ}C$. The supercritical reaction condition affected the crystallization behavior, and mechanical and rheological properties of the decrosslinked polyethylene foam, but not its crystallographic structure or crystallinity.

Keywords

References

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