Photodegradation of Polyimides 2. Thermal Property Changes of Polyimides Based on a Perfluorinated Dianhydride

Abstract

Polyimides based on a perfluorinated dianhydride decrease in thermal and thermal oxidative stability upon photolysis with an unfiltered medium pressure mercury lamp source. Additionally, the glass transition of photolyzed of polyimides containing the perfluorinated moiety is lowered with increasing photolysis time. By contrast, pyromellitic dianhydride polymers are relatively thermally stable even after prolonged photolysis under similar conditions. Imides; Polymers.

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Document Details

Document Type
Technical Report
Publication Date
May 31, 1989
Accession Number
ADA208447

Entities

People

  • C. E. Hoyle
  • E. T. Anzures

Organizations

  • University of Southern Mississippi

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DTIC Thesaurus Topics

  • Abstracts
  • Body Weight
  • Chemical Reactions
  • Chemistry
  • Classification
  • Contrast
  • Engineering
  • Mercury Lamps
  • Military Research
  • Mississippi
  • Photochemistry
  • Photolysis
  • Polymers
  • Security
  • Thermal Properties
  • Thermal Stability
  • United States

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  • Organic Chemistry
  • Polymer Science and Technology