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The phosphorescence spectrum and photodegradation of polystyrene films
Author(s) -
George G. A.
Publication year - 1974
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.1974.070180209
Subject(s) - phosphorescence , polystyrene , photodegradation , photochemistry , ketone , excimer , alkyl , materials science , chemistry , polymer chemistry , polymer , catalysis , organic chemistry , fluorescence , photocatalysis , optics , physics , composite material
Abstract Low‐temperature polarized phosphorescence spectroscopy of polystyrene polymerized under different conditions is used to detect emission from phenyl alkyl ketone endgroups in addition to triplet excimer emission from phenyl groups. The carbonyl group concentration can only be lowered by vigorous chemical reduction; and from the phosphorescence excitation spectrum, these carbonyl groups are considered responsible for the initiation of polystyrene photodegradation by solar radiation.