Photodegradation of Polyimide 1. A Spectral, Viscometric, Chromatographic and Weight Loss Investigation of Polyimides Based on a Perfluorinated Dianhydride

Photodegradation of Polyimide 1. A Spectral, Viscometric, Chromatographic and Weight Loss Investigation of Polyimides Based on a Perfluorinated Dianhydride

The photodegradation of aromatic dianhydride based polyimide films with perfluorinated chromophores 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 cond...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Hoyle, C E, Anzures, E T
Format: Report
Sprache:eng
Schlagworte:
ANHYDRIDES
AROMATIC COMPOUNDS
CHAINS
CHROMOPHORES
CLEAVAGE
DEGRADATION
EMISSION
FLUORESCENCE
FLUORINATION
Organic Chemistry
PERFLUORINATED DIANHYDRIDES
PHOTODEGRADATION
PHOTOLYSIS
POLYIMIDE RESINS
Polymer Chemistry
POLYMERIC FILMS
PYROMELLITIC DIANHYDRIDES
SOLUTIONS(MIXTURES)
WEIGHT REDUCTION
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Zusammenfassung:The photodegradation of aromatic dianhydride based polyimide films with perfluorinated chromophores 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 demonstrates and efficient rearrangement to a yield a highly fluorescent species which can be used as an effective tool for following the degradation process.