Photodegradation of Polyimides .3. The Effect of Chemical Composition, Radiation Source, Atmosphere, and Processing
Document Type
Article
Publication Date
6-1-1992
Department
Polymers and High Performance Materials
Abstract
Polyimide films made from diarylanhydrides with oxygen, carbonyl, and hexafluoroisopropylidene 6F bridging groups are photolabile when irradiated with unfiltered light from a medium-pressure mercury lamp. The presence of oxygen is necessary to the photolytic degradation process, which results in the ultimate oxidative ablation of thin polyimide films. Films based on the 6F dianhydride containing a hexafluoroisopropylidene hinge group are the most unstable. However, photolysis of 6F dianhydride based polyimides in an inert atmosphere with either the unfiltered medium pressure mercury lamp or an electron beam results in no detectable changes even after long exposure times.
Publication Title
Journal of Polymer Science Part A: Polymer Chemistry
Volume
30
Issue
7
First Page
1233
Last Page
1245
Recommended Citation
Hoyle, C. E.,
Anzures, E. T.
(1992). Photodegradation of Polyimides .3. The Effect of Chemical Composition, Radiation Source, Atmosphere, and Processing. Journal of Polymer Science Part A: Polymer Chemistry, 30(7), 1233-1245.
Available at: https://aquila.usm.edu/fac_pubs/6786