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The effect of electron beam irradiation on PCL and PDXO-X monitored by luminescence and electron spin resonance measurements

Authors
Journal
Polymer
0032-3861
Publisher
Elsevier
Publication Date
Volume
41
Issue
4
Identifiers
DOI: 10.1016/s0032-3861(99)00299-2
Keywords
  • Electron Beam Irradiation
  • Luminescence
  • Electron Spin Resonance
Disciplines
  • Chemistry

Abstract

Abstract The effect of electron beam irradiation in air or argon was studied on two hydrolysable aliphatic polyesters, poly(ϵ-caprolactone) (PCL) and chemically cross-linked poly(1,5-dioxepan-2-one) (PDXO-X). A secondary alkylether radical and a tertiary alkyl radical were identified by ESR in PCL and PDXO-X after irradiation in both air and argon. For the samples irradiated in air, peroxy radicals were detected in PCL but not in PDXO-X. For irradiated PCL, the intensities in the luminescence measurements seemed to be dose-dependent. Large amounts of oxidation products were found present in the PDXO-X irradiated in air and the luminescence intensities seemed to be dose-dependent.

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