采用 N,N-二甲基乙酰胺(DMAc) / 氯化锂(LiCl)体系作为纤维素溶剂,制备了纤维素 / 聚醚砜共混膜。探讨了共混比对膜的断裂强度、断裂伸长率和纯水通量等膜性能的影响,并确定了纤维素 / 聚醚砜最佳共混比为 1 : 16。 对共混膜进行了 SEM 和 DSC 分析,确认了纤维素 / 聚醚砜共混膜是一个相容的聚合物共混体系。

Blend membranes of cellulose and polyethersulfone ( PES) were prepared by using the mixture of DMAc / LiCl as solvent of cellulose. The influence of blend ratio on tensile strength, elongation at break, and pure water flux of the blend membrane was discussed. The optimal blend ratio of cellulose / PES was determined to be 1 : 16. SEM and DSC analysis was carried out on the blend membrane. The results showed that the cellulose / PES blend membrane is a compatible system.