聚砜中空纤维超滤膜制备条件的考察

考察了膜液温度，内外凝胶温度和膜液出喷丝头的剪切速度对聚砜中空纤维超滤膜性能的影响。结果表明，保持其它条件一定时，膜液温度升高或凝胶温度降低时，最终膜孔径变小，并用制膜体系三元相图进行了分析，当膜液出喷丝头的剪切速度达到某一极限值时（不同膜液体系，此极限值不同），获得了压密性能优良的聚砜中空纤维超滤膜。

EFFECT OF PREPARATION CONDITIONS ON THE PERFORMANCE OF THE FINAL POLYSULFONE HOLLOW FmER ULTRAFILTRATION MEMBRANES

The effect of the dope temperature (spinning temperature), temperature of coagulant (outside and inside) and the spinning rate that the dope was spinned out of the spinneret on the performance of the final polysulfone hollow fiber ultrafiltration membranes has been studied. The results showed that the pore size of the final membrane became small while the temperature of the dope was increased or the temperature of the coagulant was decreased, if other parameters of membrane preparation were not changed; Hollow fiber membranes with excellent compressive strength were obtained when the spinning rate of the dope reached a certain limit.