Foaming of recycled crosslinked polyethylenes via supercritical decrosslinking reaction

Yong Jin Kwon, Wan Yong Park, Soon Man Hong, Chong Min Koo

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Foaming of decrosslinked crosslinked polyethylene (DCXLPE) was investigated to assess the feasibility of recycled crosslinked polyethylene for polyolefin foam applications. DCXLPE was recycled from irradiation-induced crosslinked polyethylene using the supercritical methanol process. As the concentration of crosslinking agents increased, the gel fraction and hardness of the DCXLPE foam sheets increased, while the expansion ratio and cell size decreased. The resulting foam products not only revealed a viable foam structure and properties comparable with those of conventional polyethylene foam from virgin low-density polyethylene resin but also are expected to open new applications for recycled crosslinked polyolefin via supercritical decrosslinking reaction.

Original languageEnglish
Pages (from-to)E21-E27
JournalJournal of Applied Polymer Science
Issue numberSUPPL. 2
Publication statusPublished - 2012 Nov 25
Externally publishedYes


  • LDPE
  • decrosslink
  • forming
  • recycling
  • supercritical

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry


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