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Mechanisms of antioxidant action: C–nitroso compounds as UV stabilizers for polypropylene
Author(s) -
Chakroborty K. B.,
Scott G.,
Yaghmour H.
Publication year - 1985
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1985.070300116
Subject(s) - nitroso , polypropylene , antioxidant , nitroso compounds , oxidative phosphorylation , alkyl , polymer , stabilizer (aeronautics) , chemistry , organic chemistry , polymer chemistry , materials science , biochemistry , mechanical engineering , engineering
It is shown that nitroso‐ tert ‐alkanes are highly active UV stabilizers which become at least partially chemically attached to polypropylene during processing. The aromatic nitroso compounds are less effective as light stabilizers but are more effective than their alkyl analogues as thermal oxidative stabilizers. Mechanisms are proposed to account for the antioxidant activity of the nitroso compounds and their ability to cause crosslinking of the polymer during processing.