Protecting polymers against damage from gamma radiation

✍ Scribed by Peter P. Klemchuk

• Book ID: 103990098
• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 536 KB
• Volume: 41
• Category: Article
• ISSN: 0969-806X
• DOI: 10.1016/0969-806x(93)90052-v

✦ Synopsis

The sensitivity of polymers to oxidation and chain missioning during exposure to high energy radiation is mitigated by the use of radical trappin stabilizers of the hinder4 phenol and hi&red amine classes. The stabilizers undergo o x&iv-formationsindleprocessand, in the case of hi&red phenols, yield colored products with conjugated %-electmns, which contribute to the discoloration of the polymers. Hindemd amine stabiRzer& in combination with trivalent phosphorus melt processing stabilimm, are the stabili" of choice to protect pp against gamma radiatton since they arc effective in protecting polymer properhes smce they am usually much less discoloring than hindered phenolic stabdizers.