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Ageing due to gamma-radiation of a crosslinked polyethylene

✍ Scribed by G. Spadaro; E. Calderaro; G. Rizzo

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
262 KB
Volume
28
Category
Article
ISSN
0014-3057

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✦ Synopsis

Ageing due to gamma radiation in air of a low density polyethylene, previously crosslinked by gamma-radiation under vacuum, is studied. The aim is to try to separate crosslinking and degradation phenomena which usually occur during irradiation in air. The effect of irradiation is investigated by means of solubility and swelling and calorimetric measurements, and stress-strain tensile tests. Gamma-radiation in air of the crosslinked polymer causes mainly oxidative degradation, the extent of which depends on irradiation dose rate.

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Gamma-radiation ageing of a low density
Gamma-radiation ageing of a low density polyethylene. Effects of irradiation temperature and dose rate
✍ G. Spadaro πŸ“‚ Article πŸ“… 1993 πŸ› Elsevier Science 🌐 English βš– 280 KB

Ageing due to gamma radiation of a low density polyethylene at various dose rates and temperatures is studied; the effect of thermal treatment only is also considered. The modifications induced in the molecular and crystallinity behaviour of the polymer are investigated by means of gel extraction, m