Please use this identifier to cite or link to this item: https://doi.org/10.1002/aic.12083
Title: Polyamide-imide Nanofiltration hollow fiber membranes with elongation-induced nano-pore evolution
Authors: Sun, S.P.
Wang, K.Y. 
Rajarathnam, D. 
Hatton, T.A.
Chung, T.-S. 
Keywords: Glutathione
Hllow fiber membranes
Nanofiltration
Polyamide-imide (PAI)
Torlon®
Issue Date: Jun-2010
Citation: Sun, S.P., Wang, K.Y., Rajarathnam, D., Hatton, T.A., Chung, T.-S. (2010-06). Polyamide-imide Nanofiltration hollow fiber membranes with elongation-induced nano-pore evolution. AIChE Journal 56 (6) : 1481-1494. ScholarBank@NUS Repository. https://doi.org/10.1002/aic.12083
Abstract: The molecular design of nanoporous membranes with desired morphology and selectivity has attracted significant interest over the past few decades. A major problemin their applications is the trade-off between sieving property and permeability. Here, we report the discovery of elongation-induced nano-pore evolution during the external stretching of a novel polyamide-imide nanofiltration hollow fiber membrane in a dry-jet wet-spinning process that simultaneously leads to a decreased pore size but increased pure water permeability. The molecular weight cutoff, pore size, and pore size distribution were finely tuned using this approach. AFM and polarized FTIR verified the nano-pore morphological evolution and an enhanced molecular orientation in the surface skin layer. The resultant nanofiltration membranes exhibit highly effective fractionation of the monovalent and divalent ions of NaCl/ Na2SO4 binary salt solutions. More than 99.5%glutathione can be rejected by the nanofiltration membranes at neutral pH, offering the feasibility of recovering this tripeptide. © 2009 American Institute of Chemical Engineers.
Source Title: AIChE Journal
URI: http://scholarbank.nus.edu.sg/handle/10635/89831
ISSN: 00011541
DOI: 10.1002/aic.12083
Appears in Collections:Staff Publications

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

SCOPUSTM   
Citations

41
checked on Dec 7, 2018

WEB OF SCIENCETM
Citations

39
checked on Nov 21, 2018

Page view(s)

40
checked on Nov 9, 2018

Google ScholarTM

Check

Altmetric


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