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In page Polytetrafluoroethylene:
"In the 1990s, it was found that PTFE could be radiation cross-linked above its melting point in an oxygen-free environment.[10] Electron beam processing is one example of radiation processing. Cross-linked PTFE exhibits enhanced high-temperature mechanical properties and improved radiation stability. That was significant because, for many years, irradiation at ambient conditions has been used to break down PTFE for recycling.[11] This radiation-induced chain scission allows it to be more easily reground and reused.[citation needed]
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