PBT plasticity loss induced by oxidative and hydrolysis ageing
Article dans une revue avec comité de lecture
This paper reports the study of embrittlement of PBT submitted either to thermal or hydrolytic ageing. All changes were followed up by tensile tests, rheometry in molten state and gel permeation chromatography for molar mass changes, SAXS and DSC experiments for crystallinity changes. Both kind of ageing were shown to induce predominant chain scissions with moderate crystallinity increase, in great part due to annealing. The combination of all results were used to establish a Mw - χc embrittlement window helping for a determination of an end of life criterion.
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Article dans une revue avec comité de lectureLOYER, Camille; FERREIRA, Paulo; MARIJON, Jean-Baptiste; MICHEL, Vincent; REGNIER, Gilles; VERA, Julie; DUVAL, Vincent; RICHAUD, Emmanuel (Elsevier BV, 2022-01-31)Embrittlement caused by injection molding was investigated on a commercial grade of Polybutylene terephthalate (PBT). The effect of temperature and residence time in the barrel on mechanical properties was studied. Results ...
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