Long-term oxidative degradation in polyethylene irradiated with ion beams

Yoshimasa Hama, Toshitaka Oka, Junichi Uchiyama, Hidenori Kanbe, Kenji Nabeta, Fumio Yatagai

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


The long-term oxidative degradation for high density polyethylene (HDPE) irradiated with various ion-beams was studied. Such degradation was insignificant for low density polyethylene (LDPE) even if irradiation was carried out under the same condition as for HDPE. This is attributed to a hydroperoxide group as the initiator produced by the reaction of the allyl radical with oxygen. The relationship between the mechanical properties and the local transformation induced by ion-beam irradiation was investigated. It is seen that the depth profiles of the mechanical properties along the pathway of the injected ion correspond to that of the crosslinking induced in polyethylene.

Original languageEnglish
Pages (from-to)133-139
Number of pages7
JournalRadiation Physics and Chemistry
Issue number1
Publication statusPublished - 2001
Externally publishedYes


  • Ion-beam irradiation
  • Irradiation effects
  • PE degradation
  • Polyethylene

ASJC Scopus subject areas

  • Radiation


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