具有海绵状结构聚醚砜分离膜的制备及其孔径调控方法研究  

Study on the preparation of PES membrane with sponge-like structure and pore size controlling

作　　者：王建明 张瑞金 仲晓晴 宋宏臣 Wang Jianming;Zhang Ruijin;Zhong Xiaoqing;Song Hongchen(Guangzhou Institute of Advanced Technology,Chinese Academy of Sciences,Guangdong Key Lab of Membrane Material and Membrane Separation,Guangzhou 511458;Postdoctoral Research Center,Guangzhou Nansha Information Technology Park Co.,Ltd.,Guangzhou 511458)

机构地区：[1]广州中国科学院先进技术研究所,广东省膜材料与膜分离重点实验室,广州511458 [2]广州南沙资讯科技园有限公司博士后科研工作站,广州511458

出　　处：《化工新型材料》2020年第9期100-104,共5页New Chemical Materials

基　　金：广东省基础与应用基础研究基金项目(2020A1515011155);国家重点研发计划(2019YFC1711300);中国科学院科技服务网络计划(STS计划)区域重点项目(KFJ-STS-QYZX-043);中国博士后科学基金面上项目(206890);广州市南沙区科技项目(2017CX012)。

摘　　要：为了获得具有海绵状结构和精准分离性能的聚醚砜膜,系统地研究了固含量,甘油、聚乙烯吡咯烷酮以及丙酮含量对溶液相转化法下制膜性能的影响机制。结果表明:甘油,聚乙烯吡咯烷酮含量可用于调控膜材料结构,实现海绵状结构分离膜的制备;固含量以及丙酮含量分别影响膜孔致密程度以及分离层的亚稳态,通过改变两者含量可以获得具有不同分离精度的聚醚砜膜。即当聚乙烯吡咯烷酮含量为11.0%~13.0%,甘油含量为5.0%,可以有效地控制海绵状结构;保持聚醚砜16.0%~18.0%的固含量,通过改变铸膜液中丙酮含量可以实现分离膜孔径在10~200nm的精准调节。The polyethersulfone(PES)membrane with sponge-like structure and precise separation performance was prepared by nonsolvent induce phase separation method,and the effects of solid content,glycerin,polyvinylpyrrolidone and acetone content on membrane performance were systematically studied.The results showed that the content of glycerol and polyvinylpyrrolidone could be used to regulate the membrane structure,and realized the preparation of sponge-like membrane.Solid content and acetone content affected the degree of pore density and the metastability of the separation layer respectively.PES membranes with different separation accuracy could be obtained by changing the content of solid and acetone.Furthermore,when the content of polyvinylpyrrolidone was 11.0%~13.0%,and the content of glycerin was 5.0%,the sponge-like structure could be controlled effectively.When the solid content was 16.0%~18.0%,the pore size of the memebrane could be adjusted precisely at 10~200 nm by changing the content of acetone in the casting solution.

关 键 词：聚醚砜膜 海绵结构 孔径调控 精准分离 

分 类 号：TQ028.8[化学工程]