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Type: Artigo de periódico
Title: Mechanical Degradation Of Polypropylene: Effect Of Uv Irradiation
Author: Baumhardt-Neto R.
De Paoli M.-A.
Abstract: In studies of polymer degradation, one relates physical and chemical property changes to ageing conditions under the effect, usually, of a single initiating process. In order to study the possible existence of associated effects in the combined photo and mechanical degradation of polypropylene, the behavior of oriented and non-oriented film samples irradiated under load have been investigated, as well as the effect of UV-irradiation on samples being mechanically tested. Results indicate the existence of photo-tribo-chemical effects which have been detected by stress relaxation and stress-strain measurements, and by carbonyl index determinations. © 1993.
Rights: fechado
Identifier DOI: 10.1016/0141-3910(93)90191-K
Date Issue: 1993
Appears in Collections:Unicamp - Artigos e Outros Documentos

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