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
Hoyle, C. E.,
(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.
Available at: http://aquila.usm.edu/fac_pubs/7034