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Crystalline polyimides containing 4,4'-bis/3,4-dicarboxyphenoxy/diphenyl sulfide dianhydrideA high degree of crystallinity has been found in unoriented polymer films formed from 4,4'-bis(3,4-dicarboxyphenoxy)diphenyl sulfide dianhydride (BDSDA) and p-phenylenediamine (PDA). Partial crystallinity for a polymer containing BDSDA and benzidine is also reported. A study of the thermal properties of the crystalline polyimides shows crystalline melting points of 426 C and 483 C respectively for the BDSDA-PDA and the BDSDA-benzidine polymers.
Document ID
19780055789
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Saint Clair, T. L. (NASA Langley Research Center Hampton, VA, United States)
Saint Clair, A. K. (NASA Langley Research Center Hampton, Va., United States)
Date Acquired
August 9, 2013
Publication Date
June 1, 1977
Publication Information
Publication: Journal of Polymer Science
Subject Category
Nonmetallic Materials
Accession Number
78A39698
Distribution Limits
Public
Copyright
Other

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