聚酰胺
界面聚合
复合数
膜
聚合
薄膜复合膜
材料科学
化学工程
分离(统计)
高分子化学
高分子科学
聚合物
化学
复合材料
反渗透
工程类
计算机科学
单体
生物化学
机器学习
作者
Hongyi Dang,Xingtao Zuo,Juan Xiong,Jiajie He,Yun Zhou,Cong Ma,Shuili Yu,Zhongbing Chen
标识
DOI:10.1016/j.seppur.2024.127983
摘要
Developing ultrathin polyamide thin-film composite (PA TFC) membrane with ultrahigh performance to overcome the perm-selectivity upper bound of molecular separation is still the major challenge for practical applications. Herein, we first designed an ultrahigh performance PA TFC membrane fabricated by interfacial polymerization of 4, 6-diaminoresorcinol dihydrochloride (DAR) and trimethyl chloride (TMC) on the substrate. The structural morphology of the PA active layer and the separation performance of the resultant membrane were tuned by DAR dosage. This ultrathin PA TFC membrane breaks the trade-off between water permeance and dye (NOM) selectivity. Accordingly, the optimal membrane had a water flux of 212.5 LHM/bar with superior rejection of 98.6 % and 100 % for BBR and CR, respectively, surpassing the upper-bound limit of most reported polymeric membranes thus far. The membranes also exhibited a high salt passage (>95 %), achieving an impressive screening capacity for the dye/salt mixture as well as excellent antifouling and operation stability performance. This work sheds light on the regulation of the PA selective layer via new amine monomer featuring ultrahigh performance.
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