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

Ohrlander, M.Department of Polymer Technology, The Roy. Inst. of Technol., S-100 44, Stockholm, Sweden (author)

The effect of electron beam irradiation in air or argon was studied on two hydrolysable aliphatic polyesters, poly(e-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.The effect of electron beam irradiation in air or argon was studied on two hydrolysable aliphatic polyesters, poly(e-caprolactone) (PCL) and chemically cross-linked poly(1,5-dioxepan-2-one) (PDXO-X). A secondary alkylether radical and 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.

Erickson, R. (author)
Palmgren, R.Department of Polymer Technology, The Roy. Inst. of Technol., S-100 44, Stockholm, Sweden (author)
Wirsen, A.Wirsén, A., Department of Polymer Technology, The Roy. Inst. of Technol., S-100 44, Stockholm, Sweden (author)
Albertsson, A.-C.Department of Polymer Technology, The Roy. Inst. of Technol., S-100 44, Stockholm, Sweden (author)
Department of Polymer Technology, The Roy. Inst. of Technol., S-100 44, Stockholm, SwedenWirsén, A., Department of Polymer Technology, The Roy. Inst. of Technol., S-100 44, Stockholm, Sweden (creator_code:org_t)

By the author/editor: Ohrlander, M.; Erickson, R.; Palmgren, R.; Wirsen, A.; Albertsson, A.-C ...

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