Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/90727
Title: Sulfonated polyethersulfone-based membranes with different ion forms for high-performance gas separation
Authors: Li, Y. 
Chung, T.-S. 
Issue Date: 2007
Source: Li, Y.,Chung, T.-S. (2007). Sulfonated polyethersulfone-based membranes with different ion forms for high-performance gas separation. 2007 AIChE Annual Meeting : -. ScholarBank@NUS Repository.
Abstract: The sulfonation of polymeric membrane materials is an effective method for advancing membrane-based gas separation performance. Two types of sulfonated polyethersulfone (SPES) polymers with different degrees of sulfonation (DS) were synthesized by adjusting the used amount of chlorosulfonic acid. The SPES-H membranes exhibited a decrease in the permeability and an increase in the selectivity with increasing the degree of sulfonation because of the effect of electrostatic crosslinking. The SPES-Zn membrane exhibited the best gas separation performance. Compared with flat dense PES membranes, the SPES-Zn membrane displayed impressive permselectivity increments of ∼ 140%, 86%, 18%, and 57% for He/N2, H2/N2, O2/N2, and CO2/CH4 gas pairs, respectively. The newly developed SPES membranes with different ion forms showed high resistance to the CO2-induced plasticization and a comparably high CO2/CH4 selectivity in pure gas and mixed gas measurements. This is an abstract of a paper presented at the 2007 AIChE Annual Meeting (Salt Lake City, UT 11/4-9/2007).
Source Title: 2007 AIChE Annual Meeting
URI: http://scholarbank.nus.edu.sg/handle/10635/90727
ISBN: 9780816910229
Appears in Collections:Staff Publications

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