Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.memsci.2007.08.038
Title: Enhanced gas separation performance of dual-layer hollow fiber membranes via substructure resistance reduction using mixed matrix materials
Authors: Widjojo, N. 
Zhang, S.D.
Chung, T.S. 
Liu, Y.
Keywords: Air gap distance
Dual-layer hollow fiber membranes
Dual-layer spinneret
Elongational draw ratio
Nanoparticles
Substructure resistance
Issue Date: 1-Dec-2007
Citation: Widjojo, N., Zhang, S.D., Chung, T.S., Liu, Y. (2007-12-01). Enhanced gas separation performance of dual-layer hollow fiber membranes via substructure resistance reduction using mixed matrix materials. Journal of Membrane Science 306 (1-2) : 147-158. ScholarBank@NUS Repository. https://doi.org/10.1016/j.memsci.2007.08.038
Abstract: Copoly(4,4′-diphenyleneoxide/1,5-naphthalene-2,2′-bis(3,4-dicarboxylphenyl)hexa fluoro propane diimide) (6FDA-ODA-NDA)/polysulfone (PSF) dual-layer hollow fiber membranes with an enhanced gas separation performance with minimum substructure resistance have been fabricated. Ways to minimize the substructure resistance of 6FDA-ODA-NDA/PSF dual-layer hollow fiber membranes have been extensively investigated in this work. It is found that the addition of Al2O3 nanoparticles in the inner layer dope solution can lower the substructure resistance and few cases may achieve 90% of the intrinsic selectivity because of the increased bulk and surface porosity. However, there is a serious limitation on the maximum elongational draw ratio or spinning speed if a traditional dual-layer spinneret is used. A combination of the incorporation of Al2O3 nanoparticles in the inner layer dope solution with an indented dual-layer spinneret is the preferred method to effectively minimize the substructure resistance as well as enhance membrane separation performance. Not only does the selectivity can reach above 90% of the intrinsic property of the 6FDA-ODA-NDA dense film, but also the maximum take-up speed as well as elongational draw ratio can be increased to about twofold compared to those fibers produced using the first approach because of a better interface interaction and balanced stress distribution. Both SEM and EDX data support our observations. © 2007 Elsevier B.V. All rights reserved.
Source Title: Journal of Membrane Science
URI: http://scholarbank.nus.edu.sg/handle/10635/88849
ISSN: 03767388
DOI: 10.1016/j.memsci.2007.08.038
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

29
checked on May 21, 2018

WEB OF SCIENCETM
Citations

27
checked on May 7, 2018

Page view(s)

33
checked on May 11, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.