a process for utilizing scrap aromatic oxadiazole / n - alkyhydrazide copolymer by dissolving the scrap copolymer in oleum thereby effecting degradation thereof and heating the resulting solution at a temperature between about 100 ° c . and 160 ° c . to form a polymer solution . articles such as fibers can be shaped from this solution by combining the solution with an aqueous medium such as water .