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Studies on the photo‐oxidative mechanism of polymers. VII. The role of singlet oxygen in the dye‐photosensitized oxidation of cis ‐1,4‐ and 1,2‐ polybutadienes and butadiene–styrene copolymers
Author(s) -
Rabek J. F.,
Rånby B.
Publication year - 1979
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.1979.070230825
Subject(s) - polybutadiene , singlet oxygen , copolymer , photochemistry , styrene , polymer chemistry , double bond , polymer , oxygen , chemistry , reaction mechanism , singlet state , materials science , catalysis , excited state , organic chemistry , physics , nuclear physics
This paper presents an extensive study on dye‐photosensitized singlet oxygen oxidation of cis ‐1,4‐polybutadiene, 1,2‐polybutadiene, and butadiene–styrene copolymers. The singlet oxygen oxidation occurs by “ene” type mechanism which involves formation of hydroperoxide groups by addition and a shift of the double bond. The oxidation is accompanied by chain scission and crosslinking reactions.