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Enhancing the Separation Performance of Aqueous Phase Separation-Based Membranes through Polyelectrolyte Multilayer Coatings and Interfacial Polymerization

[Image: see text] The aqueous phase separation (APS) technique allows membrane fabrication without use of unsustainable organic solvents, while at the same time, it provides extensive control over membrane pore size and morphology. Herein, we investigate if polyelectrolyte complexation-induced APS u...

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Autores principales: Baig, Muhammad Irshad, Willott, Joshua D., de Vos, Wiebe M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8276274/
https://www.ncbi.nlm.nih.gov/pubmed/34278307
http://dx.doi.org/10.1021/acsapm.1c00457
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author Baig, Muhammad Irshad
Willott, Joshua D.
de Vos, Wiebe M.
author_facet Baig, Muhammad Irshad
Willott, Joshua D.
de Vos, Wiebe M.
author_sort Baig, Muhammad Irshad
collection PubMed
description [Image: see text] The aqueous phase separation (APS) technique allows membrane fabrication without use of unsustainable organic solvents, while at the same time, it provides extensive control over membrane pore size and morphology. Herein, we investigate if polyelectrolyte complexation-induced APS ultrafiltration membranes can be the basis for different types of nanofiltration membranes. We demonstrate that APS membranes can be used as support membranes for functional surface coatings like thin polyelectrolyte multilayer (PEMs) and interfacial polymerization (IP) coatings. Three different PEMs were fabricated on poly(sodium 4-styrene sulfonate) (PSS) poly(allylamine hydrochloride) (PAH) APS ultrafiltration membranes, and only 4.5 bilayers were needed to create nanofiltration membranes with molecular weight cut-off (MWCO) values of 210–390 Da while maintaining a roughly constant water permeability (∼1.7 L·m(–2)·h(–1)·bar(–1)). The PEM-coated membranes showed excellent MgCl(2) (∼98%), NaCl (∼70%), and organic micropollutant retention values (>90%). Similarly, fabricating thin polyamide layers on the ultrafiltration PSS-PAH APS membranes by IP resulted in nanofiltration membranes with MWCO values of ∼200 Da. This work shows for the first time that APS membranes can indeed be utilized as excellent support membranes for the application of functional coatings without requiring any form of pretreatment.
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spelling pubmed-82762742021-07-14 Enhancing the Separation Performance of Aqueous Phase Separation-Based Membranes through Polyelectrolyte Multilayer Coatings and Interfacial Polymerization Baig, Muhammad Irshad Willott, Joshua D. de Vos, Wiebe M. ACS Appl Polym Mater [Image: see text] The aqueous phase separation (APS) technique allows membrane fabrication without use of unsustainable organic solvents, while at the same time, it provides extensive control over membrane pore size and morphology. Herein, we investigate if polyelectrolyte complexation-induced APS ultrafiltration membranes can be the basis for different types of nanofiltration membranes. We demonstrate that APS membranes can be used as support membranes for functional surface coatings like thin polyelectrolyte multilayer (PEMs) and interfacial polymerization (IP) coatings. Three different PEMs were fabricated on poly(sodium 4-styrene sulfonate) (PSS) poly(allylamine hydrochloride) (PAH) APS ultrafiltration membranes, and only 4.5 bilayers were needed to create nanofiltration membranes with molecular weight cut-off (MWCO) values of 210–390 Da while maintaining a roughly constant water permeability (∼1.7 L·m(–2)·h(–1)·bar(–1)). The PEM-coated membranes showed excellent MgCl(2) (∼98%), NaCl (∼70%), and organic micropollutant retention values (>90%). Similarly, fabricating thin polyamide layers on the ultrafiltration PSS-PAH APS membranes by IP resulted in nanofiltration membranes with MWCO values of ∼200 Da. This work shows for the first time that APS membranes can indeed be utilized as excellent support membranes for the application of functional coatings without requiring any form of pretreatment. American Chemical Society 2021-06-18 2021-07-09 /pmc/articles/PMC8276274/ /pubmed/34278307 http://dx.doi.org/10.1021/acsapm.1c00457 Text en © 2021 The Authors. Published by American Chemical Society Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Baig, Muhammad Irshad
Willott, Joshua D.
de Vos, Wiebe M.
Enhancing the Separation Performance of Aqueous Phase Separation-Based Membranes through Polyelectrolyte Multilayer Coatings and Interfacial Polymerization
title Enhancing the Separation Performance of Aqueous Phase Separation-Based Membranes through Polyelectrolyte Multilayer Coatings and Interfacial Polymerization
title_full Enhancing the Separation Performance of Aqueous Phase Separation-Based Membranes through Polyelectrolyte Multilayer Coatings and Interfacial Polymerization
title_fullStr Enhancing the Separation Performance of Aqueous Phase Separation-Based Membranes through Polyelectrolyte Multilayer Coatings and Interfacial Polymerization
title_full_unstemmed Enhancing the Separation Performance of Aqueous Phase Separation-Based Membranes through Polyelectrolyte Multilayer Coatings and Interfacial Polymerization
title_short Enhancing the Separation Performance of Aqueous Phase Separation-Based Membranes through Polyelectrolyte Multilayer Coatings and Interfacial Polymerization
title_sort enhancing the separation performance of aqueous phase separation-based membranes through polyelectrolyte multilayer coatings and interfacial polymerization
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8276274/
https://www.ncbi.nlm.nih.gov/pubmed/34278307
http://dx.doi.org/10.1021/acsapm.1c00457
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