论文部分内容阅读
采用浸没沉淀相转化法制备了纯聚偏氟乙烯(PVDF)平板超滤膜,并对制膜条件进行了讨论,通过对膜的纯水通量、牛血清白蛋白溶液通量和截留率的测试来考察PVDF超滤膜的性能。结果表明:溶剂种类,聚合物浓度,致孔剂浓度,凝固浴的组成和温度,预蒸发时间,刮膜速度及刮膜厚度等因素对膜的制备均有较大影响。
Pure polyvinylidene fluoride (PVDF) flat-panel ultrafiltration membrane was prepared by immersion-precipitation phase inversion method. The membrane-forming conditions were discussed. The effects of membrane pure water flux, bovine serum albumin solution flux and retention rate Test to examine the performance of PVDF ultrafiltration membrane. The results showed that the factors such as the type of solvent, the concentration of polymer, the concentration of porogen, the composition and temperature of coagulation bath, the pre-evaporation time, the speed of squeegee and the thickness of squeegee greatly influenced the preparation of membrane.