基于卤化锂改性的聚硫酸酯(PSE)超滤膜的制备及研究
Preparation and Study of Polysulfate Ester(PSE)Ultrafiltration Membrane Modified with Lithium Halide
孙凌昊 1王佳琦 1李佩佩 1曾凡夫 2许白羽 2王薇1
作者信息
- 1. 天津工业大学材料科学与工程学院,天津 300397
- 2. 德蓝水技术股份有限公司,新疆乌鲁木齐 830000
- 折叠
摘要
采用聚硫酸酯(PSE)树脂为原料、二甲基乙酰胺(DM Ac)为溶剂,卤化锂(LiF、LiBr、LiCl、LiI)为改性添加剂制备中空纤维聚硫酸酯超滤膜,利用卤素离子和DMAc的溶剂化效应,制备得到了高水通量和高抗污染性的PSE超滤膜.试验结果表明,随卤素离子原子序数的增加,亲水性,水通量,抗污染性上升.当添加剂为碘化锂(LiI)时,水通量最大为216.99 L/(m2·h),为无添加剂对照组(108.41 L/(m2·h))的两倍.且对牛血清蛋白(BSA)的截留率为98.19％,对制备高渗透性和高抗污染性的膜具有深刻意义.
Abstract
Hollow fiber polysulfate ultrafiltration membranes were prepared using polysulfate(PSE)resin as raw material,dimethylacetamide(DM Ac)as solvent,and lithium halide(LiF,LiBr,LiCl,LiI)as modified additives,and PSE ultrafiltration membranes with high water flux and high anti-pollution were obtained by utilizing solvation effects of halogen ions and DMAc.The experimental results showed that the hydrophilicity,water flux,and anti-pollution resistance rose with the increase of the atomic number of halogen ions.When the additive was lithium iodide(LiI),the maximum water flux was 216.99 L/(m2·h),which was twice as much as that of the control group without additive(108.41 L/(m2·h)).And the retention rate of bovine serum albumin(BSA)was 98.19％,which is of profound significance for the preparation of membranes with high permeability and high contamination resistance.
关键词
聚硫酸酯(PSE)/卤化锂/中空纤维膜/超滤膜Key words
polysulfate(PSE)/lithium halide/hollow fiber membranes/ultrafiltration membrane引用本文复制引用
出版年
2024
NETL
NSTL
万方数据