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New concept of thin-film composite nanofiltration membrane fabrication using a mist-based interfacial polymerization technique

The conventional interfacial polymerization (CIP) technique used for preparing thin-film composite (TFC) nanofiltration membranes typically requires a large amount of monomers during polyamide (PA) synthesis where most of the monomers are discarded after cross-linking. Thus, a new fabrication concep...

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Main Authors: Seah, M. Q., Khoo, Y. S., Lau, W. J., Goh, P. S., Ismail, A. F.
Format: Article
Published: American Chemical Society 2021
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TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/94548/
http://dx.doi.org/10.1021/acs.iecr.1c01286
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spelling my.utm.945482022-03-31T14:55:39Z http://eprints.utm.my/id/eprint/94548/ New concept of thin-film composite nanofiltration membrane fabrication using a mist-based interfacial polymerization technique Seah, M. Q. Khoo, Y. S. Lau, W. J. Goh, P. S. Ismail, A. F. TP Chemical technology The conventional interfacial polymerization (CIP) technique used for preparing thin-film composite (TFC) nanofiltration membranes typically requires a large amount of monomers during polyamide (PA) synthesis where most of the monomers are discarded after cross-linking. Thus, a new fabrication concept is proposed in this work to synthesize a PA layer via a mist-based interfacial polymerization (MIP) technique where only a small amount of aqueous solution is dispersed as mist. This approach also eliminates the rubber-rolling step in CIP. In addition to forming a thinner and looser PA structure, the piperazine solution required in the IP reaction is significantly reduced, that is, 17 times lower than that of CIP. The microdroplet dispersion approach in MIP could form a higher cross-linked PA due to the high polymerization interface besides forming a higher free-volume selective layer due to the disruption in the PA repeat structure. Our findings revealed that the newly developed mist-based TFC membrane could achieve 9.08 L/m2·h·bar pure water permeability and 97.2% Na2SO4 rejection coupled with a complete flux recovery rate. As a comparison, the conventional TFC membrane only attained 2.84 L/m2·h·bar and 95.7%, respectively. The MIP technique could also be potentially considered for developing a nanofiller-incorporated TFC membrane due to the absence of the rubber-rolling step. American Chemical Society 2021-06 Article PeerReviewed Seah, M. Q. and Khoo, Y. S. and Lau, W. J. and Goh, P. S. and Ismail, A. F. (2021) New concept of thin-film composite nanofiltration membrane fabrication using a mist-based interfacial polymerization technique. Industrial and Engineering Chemistry Research, 60 (25). pp. 9167-9178. ISSN 0888-5885 http://dx.doi.org/10.1021/acs.iecr.1c01286 DOI: 10.1021/acs.iecr.1c01286
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Seah, M. Q.
Khoo, Y. S.
Lau, W. J.
Goh, P. S.
Ismail, A. F.
New concept of thin-film composite nanofiltration membrane fabrication using a mist-based interfacial polymerization technique
description The conventional interfacial polymerization (CIP) technique used for preparing thin-film composite (TFC) nanofiltration membranes typically requires a large amount of monomers during polyamide (PA) synthesis where most of the monomers are discarded after cross-linking. Thus, a new fabrication concept is proposed in this work to synthesize a PA layer via a mist-based interfacial polymerization (MIP) technique where only a small amount of aqueous solution is dispersed as mist. This approach also eliminates the rubber-rolling step in CIP. In addition to forming a thinner and looser PA structure, the piperazine solution required in the IP reaction is significantly reduced, that is, 17 times lower than that of CIP. The microdroplet dispersion approach in MIP could form a higher cross-linked PA due to the high polymerization interface besides forming a higher free-volume selective layer due to the disruption in the PA repeat structure. Our findings revealed that the newly developed mist-based TFC membrane could achieve 9.08 L/m2·h·bar pure water permeability and 97.2% Na2SO4 rejection coupled with a complete flux recovery rate. As a comparison, the conventional TFC membrane only attained 2.84 L/m2·h·bar and 95.7%, respectively. The MIP technique could also be potentially considered for developing a nanofiller-incorporated TFC membrane due to the absence of the rubber-rolling step.
format Article
author Seah, M. Q.
Khoo, Y. S.
Lau, W. J.
Goh, P. S.
Ismail, A. F.
author_facet Seah, M. Q.
Khoo, Y. S.
Lau, W. J.
Goh, P. S.
Ismail, A. F.
author_sort Seah, M. Q.
title New concept of thin-film composite nanofiltration membrane fabrication using a mist-based interfacial polymerization technique
title_short New concept of thin-film composite nanofiltration membrane fabrication using a mist-based interfacial polymerization technique
title_full New concept of thin-film composite nanofiltration membrane fabrication using a mist-based interfacial polymerization technique
title_fullStr New concept of thin-film composite nanofiltration membrane fabrication using a mist-based interfacial polymerization technique
title_full_unstemmed New concept of thin-film composite nanofiltration membrane fabrication using a mist-based interfacial polymerization technique
title_sort new concept of thin-film composite nanofiltration membrane fabrication using a mist-based interfacial polymerization technique
publisher American Chemical Society
publishDate 2021
url http://eprints.utm.my/id/eprint/94548/
http://dx.doi.org/10.1021/acs.iecr.1c01286
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score 13.211869

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