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No difference in regards to outcome
2%
59/3168
Higher rate of cross-linking when irradiated in air
3%
107/3168
Lower rate of oxidation when irradiated in air
58/3168
Accelerated wear and failure when irradiated in air
91%
2887/3168
Better wear resistance and longevity when irradiated in air
1%
40/3168
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The standard of care is irradiation of polyethylene (PE) in an inert gas (e.g. argon, nitrogen or vacuum packaging). Irradiation of PE in air (i.e. oxygen present) results in oxidized PE while irradiation in the absence of oxygen results in greater cross-linking. The quoted studies by McKellop et al and Sychtez et al both demonstrate that irradiation in air results in early PE delamination and cracking and accelerated failure due to increased oxidation.
4.3
(21)
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