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Article: Coupling heat curing and surface modification for the fabrication of high permselectivity polyamide nanofiltration membranes

TitleCoupling heat curing and surface modification for the fabrication of high permselectivity polyamide nanofiltration membranes
Authors
KeywordsInterfacial polymerization
Membrane fabrication
Nanofiltration membrane
Surface modification
Thin-film composite membrane
Issue Date2021
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci
Citation
Journal of Membrane Science, 2021, v. 623, p. article no. 119073 How to Cite?
AbstractSurface modification is an efficient post-treatment method to optimize the properties of nanofiltration (NF) membranes. Here, we report a facile surface modification strategy coupling with heat curing for grafting monoethanolamine (MEA), a monomer containing both a primary amine and a primary alcohol group, onto a nascent polyamide NF membrane. With grafting 0.5 wt% MEA at 50 °C, the pure water permeability of the polyamide NF membranes was improved from 7.9 to 19.5 L m−2 h−1 bar−1 due to their enhanced physicochemical property, such as superior hydrophilicity, rough surface morphology, and enlarged membrane pores. Meanwhile, the rejection of Na2SO4 remained above 97.5%. More importantly, the optimal membrane modified with 0.5 wt% MEA exhibited a high Na2SO4 rejection of 99.1% and a negative NaCl rejection of −20.1% when treating a mixed salt solution containing 2 g/L Na2SO4 and 2 g/L NaCl. Our study provides a novel insight for the fabrication of high permselectivity NF membranes via surface modification.
Persistent Identifierhttp://hdl.handle.net/10722/306361
ISSN
2020 Impact Factor: 8.742
2020 SCImago Journal Rankings: 1.929
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhan, ZM-
dc.contributor.authorTang, YJ-
dc.contributor.authorZhu, KK-
dc.contributor.authorXue, SM-
dc.contributor.authorJi, CH-
dc.contributor.authorTang, CY-
dc.contributor.authorXu, ZL-
dc.date.accessioned2021-10-20T10:22:32Z-
dc.date.available2021-10-20T10:22:32Z-
dc.date.issued2021-
dc.identifier.citationJournal of Membrane Science, 2021, v. 623, p. article no. 119073-
dc.identifier.issn0376-7388-
dc.identifier.urihttp://hdl.handle.net/10722/306361-
dc.description.abstractSurface modification is an efficient post-treatment method to optimize the properties of nanofiltration (NF) membranes. Here, we report a facile surface modification strategy coupling with heat curing for grafting monoethanolamine (MEA), a monomer containing both a primary amine and a primary alcohol group, onto a nascent polyamide NF membrane. With grafting 0.5 wt% MEA at 50 °C, the pure water permeability of the polyamide NF membranes was improved from 7.9 to 19.5 L m−2 h−1 bar−1 due to their enhanced physicochemical property, such as superior hydrophilicity, rough surface morphology, and enlarged membrane pores. Meanwhile, the rejection of Na2SO4 remained above 97.5%. More importantly, the optimal membrane modified with 0.5 wt% MEA exhibited a high Na2SO4 rejection of 99.1% and a negative NaCl rejection of −20.1% when treating a mixed salt solution containing 2 g/L Na2SO4 and 2 g/L NaCl. Our study provides a novel insight for the fabrication of high permselectivity NF membranes via surface modification.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci-
dc.relation.ispartofJournal of Membrane Science-
dc.subjectInterfacial polymerization-
dc.subjectMembrane fabrication-
dc.subjectNanofiltration membrane-
dc.subjectSurface modification-
dc.subjectThin-film composite membrane-
dc.titleCoupling heat curing and surface modification for the fabrication of high permselectivity polyamide nanofiltration membranes-
dc.typeArticle-
dc.identifier.emailTang, CY: tangc@hku.hk-
dc.identifier.authorityTang, CY=rp01765-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.memsci.2021.119073-
dc.identifier.scopuseid_2-s2.0-85099630852-
dc.identifier.hkuros326743-
dc.identifier.volume623-
dc.identifier.spagearticle no. 119073-
dc.identifier.epagearticle no. 119073-
dc.identifier.isiWOS:000619228500003-
dc.publisher.placeNetherlands-

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