文献类型：期刊文献

中文题名：聚醚砜中空纤维膜的制备及其微结构调控

英文题名：Preparation of Polyethersulfone Hollow Fiber Membrane and Its Microstructure Regulation

作者：陆才运[1];袁彬瑞[2];赵东[3];沈诗雨[1];蒋金虎[1];沈春银[1];王艳莉[1];詹亮[1];戴干策[1]

机构：[1]华东理工大学,化学工程联合国家重点实验室,上海200237;[2]赛鼎工程有限公司,太原030000;[3]上海华力集成电路制造有限公司,上海201203

年份：2023

卷号：51

期号：6

起止页码：15

中文期刊名：工程塑料应用

外文期刊名：Engineering Plastics Application

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD2023_2024】；

语种：中文

中文关键词：聚醚砜;中空纤维膜;纺丝工艺;形貌结构;微结构调控

外文关键词：polyethersulfone;hollow fiber membrane;spinning;morphological structure;microstructural regulation

摘要：以聚醚砜(PESU)为膜材料,聚乙烯吡咯烷酮为致孔剂,水为非溶剂,N,N-二甲基乙酰胺为溶剂,采用非溶剂致相分离的干喷湿纺法制备PESU中空纤维膜丝,探究了气隙湿度、PESU含量、牵伸倍数、喷板温度、凝固浴温度等因素对膜丝微结构的影响。使用扫描电子显微镜观察了膜丝截面形貌结构并对膜丝组件的牛血清蛋白(BSA)截留性能进行了表征。结果表明,在PESU质量分数为15%~18%、气隙湿度为60%、喷板温度为30℃、凝固浴温度为70℃及牵伸倍数为2.5~3倍的条件下可制得内皮层较薄、支撑层呈海绵孔结构的中空纤维膜;气隙湿度由50%增加至60%时,膜丝内皮层厚度占比由10.02%减小至4.07%;膜丝内皮层厚度占比随PESU含量的增大及喷板温度的提高而增加,随牵伸倍数的增大、气隙湿度的提升及凝固浴温度的升高而下降;所制得的带内皮层的截面海绵状结构中空纤维膜对BSA截留率皆在98%以上。
The polyethersulfone(PESU)hollow fiber membrane was prepared by the dry-jet wet spinning method of nonsolvent-induced phase separation(NIPS)using PESU/N,N-dimethylacetamide polymer solution with polyvinyl pyrrolidone used as porogen and water as non-solvent additive.The effects of air gap humidity,PESU content,draw ratio,spinneret temperature and coagulating bath temperature on the microstructure of membrane filaments were investigated.The cross-sectional morphology of the membrane filament was observed by scanning electron microscopy and the separation properties of the membrane modules were characterized by rejection ratio of bovine serum albumin(BSA).The results show that the hollow fiber membranes with sponge-like pore in the membrane support layer and thinner inner skin layer structure can be prepared under the conditions of PESU content of 15 wt%-18 wt%,air gap humidity of 60%,spinneret temperature of 30℃,coagulating bath temperature of 70℃and in the case of as-spun fiber draw ratio with 2.5-3.When the air gap humidity increases form 50%to 60%,the proportion of the inner skin layer thickness over the membrane filament wall size decreases from 10.02%to 4.07%.The proportion of the inner skin layer thickness over the membrane filament wall size increases with the rise of PESU content and spinneret temperature while decreases with the elevation of draw ratio,air gap humidity and coagulating bath temperature.The prepared hollow fiber membrane with sponge-like structure on cross section and inner skin layer reaches at least up to 98%in separation of BSA molecules.