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The effect of electron beam irradiation on PCL and PDXO-X monitored by luminescence and electron spin resonance measurements
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- Ohrlander, M. (author)
- Department of Polymer Technology, The Roy. Inst. of Technol., S-100 44, Stockholm, Sweden
- Erickson, R. (author)
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- Palmgren, R. (author)
- Department of Polymer Technology, The Roy. Inst. of Technol., S-100 44, Stockholm, Sweden
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- Department of Polymer Technology, The Roy Inst. of Technol., S-100 44, Stockholm, Sweden Wirsén, A., Department of Polymer Technology, The Roy. Inst. of Technol., S-100 44, Stockholm, Sweden (creator_code:org_t)
- 2000
- 2000
- English.
- In: Polymer. - 0032-3861 .- 1873-2291. ; 41:4, s. 1277-1286
- Journal article (peer-reviewed)
Abstract
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- 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.
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- NATURAL SCIENCES
- NATURVETENSKAP
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