Breaking through permeability–selectivity trade-off of thin-film composite membranes assisted with crown ethers

Liang Shen; Ming Yi; Susilo Japip; Chao Han; Lian Tian; Cher Hon Lau; Yan Wang

doi:10.1002/aic.17173

Breaking through permeability–selectivity trade-off of thin-film composite membranes assisted with crown ethers

Liang Shen, Ming Yi, Susilo Japip, Chao Han, Lian Tian, Cher Hon Lau, Yan Wang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

In this study, we deployed a modified interfacial polymerization process to incorporate multifunctional crown ethers (CEs) into thin-film composite (TFC) polyamide membranes. CE additives acted as both the phase-transfer catalyst and co-solvent to facilitate the diffusion of amine monomers into the organic phase via interacting with amine monomers (form the host-guest inclusion complex), and enhanced the free volume content of the selective layer, therefore facilitating water transport and inhibiting the diffusion of salt ions. Various characterization techniques were employed to elucidate the modification mechanism as a function of CE chemical and physical properties on the microstructure of resultant TFC membranes and consequently separation performances. Compared to TFC membranes produced from traditional interfacial polymerization method, CE-modified membranes exhibited a 146% water flux enhancement and 59% lower reverse salt fluxes with a suitable draw solution. CE-modified membranes also showed the improved antifouling behavior and chemical stability in various harsh conditions.

Original language	English
Article number	e17173
Journal	AIChE Journal
Volume	67
Issue number	6
Early online date	30 Dec 2020
DOIs	https://doi.org/10.1002/aic.17173
Publication status	Published - 20 May 2021

Keywords

crown ether
interfacial polymerization
permeability–selectivity trade-off
polyamide
thin-film composite membrane

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10.1002/aic.17173

SL10-PA-CE-2020507Accepted author manuscript, 1.92 MBLicence: Creative Commons: Attribution (CC-BY)

https://www.authorea.com/users/319486/articles/449213-breaking-through-permeability-selectivity-trade-off-of-thin-film-composite-membranes-assisted-with-crown-ethers?commit=628a3b948c41d5110e1c9da574c710c621e940deLicence: Creative Commons: Attribution (CC-BY)

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title = "Breaking through permeability–selectivity trade-off of thin-film composite membranes assisted with crown ethers",

abstract = "In this study, we deployed a modified interfacial polymerization process to incorporate multifunctional crown ethers (CEs) into thin-film composite (TFC) polyamide membranes. CE additives acted as both the phase-transfer catalyst and co-solvent to facilitate the diffusion of amine monomers into the organic phase via interacting with amine monomers (form the host-guest inclusion complex), and enhanced the free volume content of the selective layer, therefore facilitating water transport and inhibiting the diffusion of salt ions. Various characterization techniques were employed to elucidate the modification mechanism as a function of CE chemical and physical properties on the microstructure of resultant TFC membranes and consequently separation performances. Compared to TFC membranes produced from traditional interfacial polymerization method, CE-modified membranes exhibited a 146% water flux enhancement and 59% lower reverse salt fluxes with a suitable draw solution. CE-modified membranes also showed the improved antifouling behavior and chemical stability in various harsh conditions.",

keywords = "crown ether, interfacial polymerization, permeability–selectivity trade-off, polyamide, thin-film composite membrane",

author = "Liang Shen and Ming Yi and Susilo Japip and Chao Han and Lian Tian and Lau, {Cher Hon} and Yan Wang",

note = "Funding Information: We thank the financial support from National Key Technology Support Program (no. 2014BAD12B06), National Natural Science Foundation of China (no. 21306058), and Natural Science Foundation of Hubei Scientific Committee (no. 2016CFA001). We also appreciate Prof. Tai-Shung Chung in National University of Singapore for PAS characterization. Special thanks are also given to the Analysis and Testing Center, the Analysis and Testing Center of Chemistry and Chemical Engineering School, and the State Key Laboratory of Materials Processing and Die & Mould Technology, in Huazhong University of Science and Technology for their help with material characterizations. Publisher Copyright: {\textcopyright} 2021 American Institute of Chemical Engineers",

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month = may,

day = "20",

doi = "10.1002/aic.17173",

language = "English",

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T1 - Breaking through permeability–selectivity trade-off of thin-film composite membranes assisted with crown ethers

AU - Shen, Liang

AU - Yi, Ming

AU - Japip, Susilo

AU - Han, Chao

AU - Tian, Lian

AU - Lau, Cher Hon

AU - Wang, Yan

N1 - Funding Information: We thank the financial support from National Key Technology Support Program (no. 2014BAD12B06), National Natural Science Foundation of China (no. 21306058), and Natural Science Foundation of Hubei Scientific Committee (no. 2016CFA001). We also appreciate Prof. Tai-Shung Chung in National University of Singapore for PAS characterization. Special thanks are also given to the Analysis and Testing Center, the Analysis and Testing Center of Chemistry and Chemical Engineering School, and the State Key Laboratory of Materials Processing and Die & Mould Technology, in Huazhong University of Science and Technology for their help with material characterizations. Publisher Copyright: © 2021 American Institute of Chemical Engineers

PY - 2021/5/20

Y1 - 2021/5/20

N2 - In this study, we deployed a modified interfacial polymerization process to incorporate multifunctional crown ethers (CEs) into thin-film composite (TFC) polyamide membranes. CE additives acted as both the phase-transfer catalyst and co-solvent to facilitate the diffusion of amine monomers into the organic phase via interacting with amine monomers (form the host-guest inclusion complex), and enhanced the free volume content of the selective layer, therefore facilitating water transport and inhibiting the diffusion of salt ions. Various characterization techniques were employed to elucidate the modification mechanism as a function of CE chemical and physical properties on the microstructure of resultant TFC membranes and consequently separation performances. Compared to TFC membranes produced from traditional interfacial polymerization method, CE-modified membranes exhibited a 146% water flux enhancement and 59% lower reverse salt fluxes with a suitable draw solution. CE-modified membranes also showed the improved antifouling behavior and chemical stability in various harsh conditions.

AB - In this study, we deployed a modified interfacial polymerization process to incorporate multifunctional crown ethers (CEs) into thin-film composite (TFC) polyamide membranes. CE additives acted as both the phase-transfer catalyst and co-solvent to facilitate the diffusion of amine monomers into the organic phase via interacting with amine monomers (form the host-guest inclusion complex), and enhanced the free volume content of the selective layer, therefore facilitating water transport and inhibiting the diffusion of salt ions. Various characterization techniques were employed to elucidate the modification mechanism as a function of CE chemical and physical properties on the microstructure of resultant TFC membranes and consequently separation performances. Compared to TFC membranes produced from traditional interfacial polymerization method, CE-modified membranes exhibited a 146% water flux enhancement and 59% lower reverse salt fluxes with a suitable draw solution. CE-modified membranes also showed the improved antifouling behavior and chemical stability in various harsh conditions.

KW - crown ether

KW - interfacial polymerization

KW - permeability–selectivity trade-off

KW - polyamide

KW - thin-film composite membrane

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ER -

Breaking through permeability–selectivity trade-off of thin-film composite membranes assisted with crown ethers

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