文献类型：期刊文献

英文题名：Thin-film composite (TFC) membrane with cross-linked adamantane (ADA) structure for high purity organic solvents deep purification

作者：Chen, Bai-He[1];Han, Rui[2];Wang, Rui-Xin[1];Jia, Rui[2];Li, Hong-Bo[1];Xu, Zhen-Liang[2,3];Xu, Sun-Jie[1,2,3]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn, Sch Chem Engn,Membrane Sci & Engn R&D Lab, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Shanghai Elect Chem Innovat Inst, Shanghai 200237, Peoples R China

年份：2025

卷号：379

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20253619101863);WOS:【SCI-EXPANDED(收录号:WOS:001568269600009)】；

基金：The authors gratefully acknowledge for the financial support received from National Natural Science Foundation of China (22208101) and Project funded by State Key R&D Program of China (2021YFB3801101 and 2021YFB3801103) as well as the research funding provided by the Fundamental Research Funds for the Central Universities (JKA01241502) .

语种：英文

外文关键词：Organic solvent nanofiltration (OSN); Adamantane embedding; Crystallinity; Silane coupling; Cross-linking

摘要：This study significantly enhanced the performance of thin-film composite (TFC) membranes by introducing adamantane (ADA) structure and employing crosslinking strategies, making them excel in the deep purification of high-purity organic solvents. Experiments revealed that when the content of 3-amino-1-adamantanol (AAMO) was 0.20 % (w/v), the pure water permeability of the TFC membrane increased significantly to 30.9 L center dot m- 2 center dot h- 1 center dot bar- 1, and the rejection rate of dyes also reached its peak, with rejection rates of 99.9 % and 100.0 % for 35 mu M methyl green (MG) and chlorazol black (CB) aqueous solutions, respectively. Through two crosslinking strategies using glutaraldehyde (GA) and silane coupling agent (KH550), the relative crystallinity of the membrane increased by 27.9 % and 13.8 %, respectively, reducing the phenomenon of separation performance inconsistency (SPI), and improving the separation accuracy and stability. Moreover, molecular dynamics (MD) simulations and density functional theory (DFT) calculations indicated that the introduction of AAMO significantly enhanced the swelling stability of polyamide (PA) and the solvent resistance of the membrane. The modified membranes demonstrated excellent permeability and rejection performance in various solvents. For instance, DT020K achieved rejection rates of 97.0 % and 98.6 % for RB in IPA and PGME solvents, respectively, with SPI indices of 2.3 and 3.7, which were much lower than the pristine membrane's 47.1 and 4.5. These results suggest that the optimized membranes have great potential in the deep purification of high-purity organic solvents, such as those required in the purification of high-purity organic solvents for integrated circuit manufacturing.