Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/82816
Title: Polyamide-imide hollow fiber membranes crosslinked with amine-appended inorganic networks for application in solvent-resistant nanofiltration under low operating pressure
Authors: Lim, Siow Kee
Setiawan, Laurentia
Bae, Tae-Hyun
Wang, Rong
Keywords: Hollow fiber membrane
Polyamide-imide
Organic–inorganic network
Solvent-resistant nanofiltration
Issue Date: 2015
Source: Lim, S. K., Setiawan, L., Bae, T.-H., & Wang, R. (2016). Polyamide-imide hollow fiber membranes crosslinked with amine-appended inorganic networks for application in solvent-resistant nanofiltration under low operating pressure. Journal of Membrane Science, 501, 152-160.
Series/Report no.: Journal of Membrane Science
Abstract: The development of polyamide-imide (PAI) hollow fiber membranes for solvent-resistant nanofiltration (SRNF) in polar aprotic solvents such as dimethylformamide (DMF) under low operating pressure of 2 bar is reported in current study. Highly porous PAI substrates were fabricated and crosslinked with (3-aminopropyl)trimethoxysilane (APTMS). The resultant membranes were solvent-stable and showed higher hydrophilicity and better mechanical property. A 30-min conditioning with either isopropanol or deionized water after the crosslinking reaction was found to affect the morphology of the membranes and thus their nanofiltration performance. Membranes conditioned with isopropanol consistently showed higher solvent fluxes coupled with lower rejections of Rose Bengal (RB) ranging 75-87%. On the other hand, membranes conditioned with deionized water had lower fluxes and high RB rejections of 96-99%. The best-performing membrane achieved a permeability of 6.4 L/(m2hbar) in IPA and 0.9 L/(m2hbar) in DMF with RB rejections of over 97% and 98%, respectively, under 2 bar operating pressure, showing their potential to be used in SRNF processes effectively.
URI: https://hdl.handle.net/10356/82816
http://hdl.handle.net/10220/40314
ISSN: 0376-7388
DOI: http://dx.doi.org/10.1016/j.memsci.2015.11.016
Rights: © 2015 Elsevier B.V. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Membrane Science, Elsevier B.V. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.memsci.2015.11.016].
metadata.item.grantfulltext: open
metadata.item.fulltext: With Fulltext
Appears in Collections:CEE Journal Articles
NEWRI Journal Articles
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