Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.ces.2005.05.066
Title: The development of high performance P84 co-polyimide hollow fibers for pervaporation dehydration of isopropanol
Authors: Liu, R.
Qiao, X.
Chung, T.-S. 
Keywords: Dehydration
Hollow fiber membranes
Isopropanol
P84 co-polyimide
Pervaporation
Issue Date: Dec-2005
Citation: Liu, R., Qiao, X., Chung, T.-S. (2005-12). The development of high performance P84 co-polyimide hollow fibers for pervaporation dehydration of isopropanol. Chemical Engineering Science 60 (23) : 6674-6686. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ces.2005.05.066
Abstract: Probably because of material and fabrication limitations, most previously developed hollow fibers were lack of high performance for pervaporation dehydration applications. In this paper, we have successfully developed integrally skinned BTDA-TDI/MDI (P84) copolyimide hollow fibers for pervaporation dehydration of isopropanol (IPA), which have impressive flux and selectivity towards water. The effects of spinning conditions such as air gap distance, coagulation temperature, and dope/bore fluid flow rates on membrane formation, morphology and pervaporation performance have been determined. Even though spinning conditions affect membrane separation performance, it is found that silicone rubber coating and heat treatment play much more important roles on performance enhancement. Not only can the silicone rubber coating effectively seal the membrane defects, but also triple the selectivity because of its nature of high water permeability while its hydrophobic property does not dominate. A tremendous increase in separation factor/selectivity (20-100 times) is observed after a heat treatment at 300 °C. The newly developed P84 hollow fibers after heat treatment have a flux of 883.5g/m2h and a separation factor of 10 585 for dehydration of 85/15 (w/w) IPA/water mixture at 60 °C. © 2005 Elsevier Ltd. All rights reserved.
Source Title: Chemical Engineering Science
URI: http://scholarbank.nus.edu.sg/handle/10635/90318
ISSN: 00092509
DOI: 10.1016/j.ces.2005.05.066
Appears in Collections:Staff Publications

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

SCOPUSTM   
Citations

72
checked on Jul 22, 2018

WEB OF SCIENCETM
Citations

60
checked on Jul 4, 2018

Page view(s)

32
checked on Jul 6, 2018

Google ScholarTM

Check

Altmetric


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