Abstract
The primary and secondary events which occur in polymers exposed to high-energy radiation are briefly surveyed with emphasis on the role of oxygen in causing polymer degradation. In addition slow, post-irradiation reactions are discussed as they relate to deterioration during storage. Potential methods of polymer stabilization against high-energy radiation are then reviewed from the viewpoints of electron and ion scavenging, energy transfer processes, radical scavenging (both carbon-centred and peroxyl) and also acceleration of radical decay. Some recently developed additive combinations, based on hindered amines, are discussed in detail and shown to operate by suppressing the formation of hydroperoxides during the free-radical oxidative chain process which immediately follows exposure to high-energy irradiation. The absence of these thermally labile groups improves post-irradiation storage stability. Finally, the effects of the radiation and radiation-induced events on stabilizers themselves are considered.
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Carlsson, D.J., Chmela, S. (1990). Polymers and High-Energy Irradiation: Degradation and Stabilization. In: Scott, G. (eds) Mechanisms of Polymer Degradation and Stabilisation. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3838-3_4
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DOI: https://doi.org/10.1007/978-94-011-3838-3_4
Publisher Name: Springer, Dordrecht
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