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将自制的一种主链聚酯型高分子液晶添加到聚砜铸膜液中 ,在温度为 80℃下 ,制成了对牛血清白蛋白截留率大于 90 %的超滤膜 .研究了高分子液晶的添加对所制超滤膜性能的影响 ,结果表明 ,在相同实验条件下 ,含高分子液晶超滤膜的截留率相对于不含高分子液晶的超滤膜有较大提高 ,从 60 %~ 70 %提高到 90 %以上 .考察了相关制膜参数如溶剂、高分子液晶浓度、添加剂种类、用量、聚砜的浓度、铸膜气氛温度、蒸发时间等对含高分子液晶超滤膜性能的影响 .
A kind of main chain polyester polymer liquid crystal was added into the polysulfone casting solution and the ultrafiltration membrane with the rejection of bovine serum albumin more than 90% The results show that the rejection of polymer-containing ultrafiltration membranes is higher than that of non-polymer-containing ultrafiltration membranes under the same experimental conditions. From 60% ~ 70% to over 90% .The effects of relevant membrane parameters such as solvent, polymer liquid crystal concentration, additive type, dosage, polysulfone concentration, casting film atmosphere temperature, Effect of film properties.