| 摘要 |
PURPOSE:To obtain the above formed article free from sticking between layers and having excellent openability, by extruding a non-aqueous solvent solution of a specific polyphosphazene into a crosslinking bath containing an alkali metal salt of a hydroxyl compound, thereby effecting wet-forming of the polyphosphazene. CONSTITUTION:A polyphosphazene containing alkoxy group accounting for >=20% of the whole side chain and soluble in a solvent is dissolved in a non- aqueous solvent such as dehydrated tetrahydrofuran or acetone to obtain a polymer solution. Separately, a crosslinking bath is produced by dissolving an alkali metal salt of a compound having >=2 hydroxyl groups (preferably >=2 CH2OH groups) in a non-aqueous solvent such as dehydrated tetrahydrofuran or toluene. The above polymer solution is extruded into the crosslinking bath to effect the wet-forming and obtain the objective formed article such as fiber or film. |
