prov:value
| - For example, according to the wet spinning method, the above polymer is dissolved in a solvent such as N,N-dimethylformamide, N,N-dimethylacetoamide, actone, a rhodan salt aqueous solution, dimethyl sulfoxide, or a nitric acid aqueous solution, and extruded to a coagulation bath through a nozzle to be coagulated, followed by stretching, washing with water, drying, heat treatment, and crimping, if
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