NASA NTRS · 19800007898
Crystalline polyimides
Abstract
Aromatic crystalline polyimides are disclosed that are synthesized from polyamide-acid and when heated to 200 C to 300 C become cyclized to afford an opaque polymer. X-ray diffraction of the unoriented film exhibited 47 percent crystallinity. Differential scanning calorimetry reveals a melt at 425 C with no glass transition in these crystalline polyimides.
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St.clair, T. L., St.clair, A. K.. 1979-12-25. Crystalline polyimides. https://ntrs.nasa.gov/citations/19800007898
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