Polypyromellitimides: Details of pyrolysis
| ISSN: |
0449-296X
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| Keywords: |
Physics ; Polymer and Materials Science
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| Source: |
Wiley InterScience Backfile Collection 1832-2000
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| Topics: |
Chemistry and Pharmacology
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| Notes: |
Polyimide films from 4,4′-diaminodiphenyl ether and pyromellitic dianhydride were pyrolyzed at 400-600°C. in non-oxidative systems. Major gaseous products were carbon monoxide and carbon dioxide; hydrogen evolution occurred above 525°C. A mobile n-imide-isoimide equilibrium is in accord with the gas evolution data. Carbon dioxide arises from isoimide decomposition and carbon monoxide arises from the normal imide.
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| Additional Material: |
4 Ill.
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| Type of Medium: |
Electronic Resource
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| URL: |