High-strength/high-modulus fibers of p-p
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Hartwig C. Bach; Frank Dobinson; K. R. Lea; J. H. Saunders
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Article
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1979
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John Wiley and Sons
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English
⚖ 389 KB
## Abstract __p__‐Phenylene oxadiazole/N‐methyl hydrazide copolymers were prepared by polymerization of terephthalic acid, dimethyl terephthalate, and hydrazine sulfate in fuming sulfuric acid, and coagulation of the polymer was obtained in aqueous sulfuric acid. Fibers spun from these copolymers h