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Microporous and functional group Co-designed polyesteramide membranes for efficient and broad-spectrum organic solvent nanofiltration

Authors :
Zheng Liu
Yuxuan Sun
Heguo Han
Qifeng Zhang
Shenghai Li
Suobo Zhang
Source :
Advanced Membranes, Vol 4, Iss , Pp 100098- (2024)
Publication Year :
2024
Publisher :
KeAi Communications Co. Ltd., 2024.

Abstract

Organic solvent nanofiltration (OSN) is an emerging energy-efficient separations technology, which urgently requires easily processable OSN membranes with high selectivity and broad-spectrum organic solvent applicability to facilitate enhanced industrial applications. Herein, we describe the preparation of microporous polyesteramide (PEA) membranes through interfacial polymerization (IP) between amino-diphenol monomers and trimesoyl chloride (TMC) on a poly(ether ether ketone) (PEEK) support. The crosslinked network structures and large twisted monomers enhance the microporosity of PEA membranes, leading to a significant improvement in solvent permeance while maintaining high selectivity. The optimized PEA membrane demonstrates exceptional permeance for acetone (21.0 ​L ​m−2 ​h−1 bar−1) and methanol (14.3 ​L ​m−2 ​h−1·bar−1), with a molecular weight cut-off of 296 ​g ​mol−1. Additionally, the PEA/APH-diphenol membrane exhibits ultrafast permeance for the nonpolar solvent toluene (8.3 ​L ​m−2 ​h−1·bar−1), owing to the introduction of a large number of ester groups. Overall, PEA membranes prepared through the molecular-level structure design of IP monomers possess enormous industrial application potential owing to their high performance and broad-spectrum applications.

Details

Language :
English
ISSN :
27728234
Volume :
4
Issue :
100098-
Database :
Directory of Open Access Journals
Journal :
Advanced Membranes
Publication Type :
Academic Journal
Accession number :
edsdoj.2aff44a537a24b2e910af444a5980eb9
Document Type :
article
Full Text :
https://doi.org/10.1016/j.advmem.2024.100098