Meeting abstract

Elastic modulus and free radical decay in irradiated polypropylene

D. Rodić ; “Boris Kidrič” Institute of Nuclear Sciences – Vinča, Beograd, Yugoslavia
V. Spirić ; “Boris Kidrič” Institute of Nuclear Sciences – Vinča, Beograd, Yugoslavia
R. Sparavalo ; “Boris Kidrič” Institute of Nuclear Sciences – Vinča, Beograd, Yugoslavia
V. Marković ; “Boris Kidrič” Institute of Nuclear Sciences – Vinča, Beograd, Yugoslavia
J. Konstantinović ; “Boris Kidrič” Institute of Nuclear Sciences – Vinča, Beograd, Yugoslavia

Abstract

Free radical concentration and elastic modulus in irradiated polypropylene were measured in the function of time after the end of irradiation. It is shown that, for samples in contact with air during and after irradiation, peroxy radicals are the main transient species. The disappearance of peroxy radicals with time is accompanied by parallel change of elastic modulus. The change of elastic modulus is related to the molecular degradation caused by complex reaction mechanisms involving peroxy radicals.

Keywords

Hrčak ID:

340950

URI

https://hrcak.srce.hr/340950

Publication date:

15.12.1980.

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