纳米气泡辅助相转化制备高表面孔隙率PSf超滤膜  

Preparation of High Surface Porosity Polysulfone Ultrafiltration Membranes by Nanobubble-assisted Phase Inversion

作　　者：吴玉洁 何本桥 WU Yu-jie;HE Ben-qiao(State Key Laboratory of Separation Membranes and Membrane Processes,School of Materials Science and Engineering,Tiangong University,Tianjin 300387;Cangzhou Research Institute of Tiangong University,Hebei Cangzhou 061000)

机构地区：[1]天津工业大学材料科学与工程学院省部共建分离膜与膜过程国家重点实验室,天津300387 [2]天津工业大学沧州研究院,河北沧州061000

出　　处：《胶体与聚合物》2024年第3期103-106,共4页Chinese Journal of Colloid & Polymer

基　　金：天津市科技重大专项(22ZXSYSY00020);河北省自然科学基金(B2023110019)。

摘　　要：本文在聚砜(PSf)铸膜液中添加微量nano-CaCO_(3),使其在盐酸凝固浴中进行相转化,利用nano-CaCO_(3)与HCl反应生成CO_(2)纳米气泡对膜结构进行调控,采用纳米气泡辅助相转化法(BNIPS)成功制备了高表面孔隙率的PSf超滤膜。结果表明,PSf铸膜液中添加的微量nano-CaCO_(3)可显著调控膜的结构和性能。当nano-CaCO_(3)添加量为0.05%时,所得PSf超滤膜分离孔径达到12.8nm,表面孔隙率达到7.4%,M-0.05膜纯水通量达916.6L/m^(2)/h,牛血清蛋白(BSA)截留率超过97%,表现出高渗透性和高选择性。In this paper,trace amounts of nano-CaCO_(3)were added to polysulfone(PSf)casting solution to make it undergo phase inversion in a hydrochloric acid coagulation bath,and nano-CaCO_(3) reacted with HCl to generate CO_(2) nanobubbles to regulate the membrane structure,and the high surface porosity PSf ultrafiltration membrane was successfully prepared by nanobubble-assisted phase inversion method(BNIPS).The results indicate that the addition of trace amounts of nano-CaCO_(3) in the PSf casting solution can significantly regulate the structure and properties of the membrane.When the amount of nano-CaCO_(3) added was only 0.05%,the separation pore size of the obtained PSf ultrafiltration membrane(M-0.05)reaches 12.8 nm,and the surface porosity reaches 7.4%,the pure water flux of M-0.05 membrane reached 916.6 L/m^(2)/h,and the bovine serum albumin(BSA)rejection exceeds 97%,showing high permeability and high selectivity.

关 键 词：纳米气泡 聚砜(PSf) 分离性能 超滤膜 nano-CaCO_(3) 

分 类 号：TQ028.8[化学工程]