High-performance self-healing composite ultrafiltration membrane based on multiple molecular dynamic interactions

被引:9
|
作者
Wang, Chuang [1 ]
Guo, Zhijie [1 ]
Wang, Chi [1 ]
Liu, Wei [1 ]
Yang, Xia [1 ]
Huo, Hongliang [1 ]
Cai, Yuhang [1 ]
Geng, Zhi [1 ]
Su, Zhongmin [2 ]
机构
[1] Northeast Normal Univ, Coll Environm, Res Ctr Municipal Wastewater Treatment & Water Qua, Changchun 130117, Peoples R China
[2] Hainan Univ, Sch Sci, Haikou 570228, Peoples R China
基金
中国国家自然科学基金;
关键词
Ultrafiltration membrane; Self-healing; Hydrogel; Boronate ester bond; POLY(VINYL ALCOHOL); HYDROGELS; WATER; INTEGRITY; FABRICATION; PARTICLES;
D O I
10.1016/j.memsci.2023.121395
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The inevitable membrane damage during the use of separation membrane seriously affects the separation and purification effects. Herein, we first synthesized a novel poly(aryl ether sulfone) material containing boronic acid groups (PES-H2BO2) through molecular design, then PES-H2BO2 ultrafiltration membrane was prepared via nonsolvent induced phase inversion method. Further, the PES-H2BO2 ultrafiltration membrane and polyvinyl alcohol (PVA) hydrogel were composited by hydrogen bonds and reversible boronate ester bonds between the two to fabricate a series of novel PVA hydrogel/PES-H2BO2 composite ultrafiltration membranes. Through the ultrafiltration experiment of polyacrylamide (PAM) solution, the flux and retention rate changes of the composite ultrafiltration membrane in the initial stage, damage stage, self-healing stage, and stabilization stage were tested and analyzed. The results confirmed that the composite membrane has the ability to rapidly restore the flux and retention rate to the pre-breakage levels through a self-healing effect within 15 min after being damaged, demonstrating their outstanding self-healing characteristics. The design strategy of fabricating composite ultrafiltration membrane with excellent self-healing performance by forming hydrogen bond and reversible boronate ester bond between hydrogel and membrane matrix in this study provides a convenient and feasible way for the design and preparation of high-performance self-healing separation membranes.
引用
收藏
页数:13
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