PHOTODEGRADATION OF POLYIMIDES .1. A SPECTRAL, VISCOMETRIC, CHROMATOGRAPHIC, AND WEIGHT-LOSS INVESTIGATION OF POLYIMIDES BASED ON A HEXAFLUORINATED DIANHYDRIDE
Polymers and High Performance Materials
The photodegradation of aromatic-dianhydride-based polyimide films in air with hexafluorinated groups in the dianhydride moiety is characterized by significant weight loss and chain cleavage. A conventional polyimide film based on pyromellitic dianhydride yields little decomposition under similar conditions of photolysis. Emission changes on photolysis of polyimide solutions demonstrate an efficient rearrangement to yield a highly fluorescent species which can be used as an effective tool for following the degradation process.
JOURNAL OF APPLIED POLYMER SCIENCE
(1991). PHOTODEGRADATION OF POLYIMIDES .1. A SPECTRAL, VISCOMETRIC, CHROMATOGRAPHIC, AND WEIGHT-LOSS INVESTIGATION OF POLYIMIDES BASED ON A HEXAFLUORINATED DIANHYDRIDE. JOURNAL OF APPLIED POLYMER SCIENCE, 43(1), 1-10.
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