Premium
The oxidative degradation of imide polymers. I: Ozonolysis of a model compound, N‐phenylphthalimide
Author(s) -
Barman S.,
Newhouse E. I.,
Neely W. C.
Publication year - 1994
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760340408
Subject(s) - ozonolysis , ozone , moiety , ultraviolet , polymer , materials science , photochemistry , fragmentation (computing) , mass spectrometry , imide , reaction mechanism , organic chemistry , chemistry , polymer chemistry , chromatography , catalysis , optoelectronics , computer science , operating system
The reactions of N‐phenylphthalimide films with ozone have been studied under a variety of conditions: dry ozone, moist ozone, ozone plus ultraviolet light, as well as ozone plus water vapor plus ultraviolet light. This compound is a conveniently available model for imide polymers. These reaction conditions represent simulation of certain aspects of the space environment. For each set of reaction conditions the reaction products were determined by combined gas chromatography/mass spectrometry. Semiempirical molecular orbital computations were made of the relative energetics of possible reaction pathways consistent with the generation of the observed products. The reaction products found indicate fragmentation of the imidic moiety for which the energetics are favorable.