抄録
By using the mixture of γ-buthyrolactone-water as coagulating bath, the coagulation process of polymer solution in γ-butyrolactone in this coagulating bath became very suitable to obtain better filaments which had no microscopic hole in their structures. The minimum water content in the coagulating bath required to coagulate polymer solution is much larger than those in other solvent-water bathes such as dimethyl formamide-water and dimethyl sulfoxide-water. By using butanol as a coagulating bath, it is also possible to obtain good coagulating process and better filaments which has superior mechanical properties and fine textures.
