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Title: Facilitated transport by hybrid POSS®-Matrimid®-Zn2+ nanocomposite membranes for the separation of natural gas
Authors: Li, F. 
Li, Y. 
Chung, T.-S. 
Kawi, S. 
Keywords: Facilitated transport
Gas separation performance
Ionic binding
Nanocomposite membranes
POSS® Octa Amic Acid
Issue Date: Jul-2010
Citation: Li, F., Li, Y., Chung, T.-S., Kawi, S. (2010-07). Facilitated transport by hybrid POSS®-Matrimid®-Zn2+ nanocomposite membranes for the separation of natural gas. Journal of Membrane Science 356 (1-2) : 14-21. ScholarBank@NUS Repository.
Abstract: Hybrid POSS® Octa Amic Acid-Matrimid® nanocomposite membranes have been successfully fabricated. The study shows that the nano-sized POSS® could be distributed uniformly over the Matrimid® matrix with an intimate polymer-particle interface. This is presumably ascribed to the existence of intermolecular hydrogen bonding between the carboxylic groups of POSS® and Matrimid®. The excellent dispersion of POSS® with eight carboxylic functional groups each moiety provides a high-density ionic binding platform for the introduction of Zn2+, which is the engine of the facilitated transport to some specific gases. The best gas separation performance is observed for the hybrid POSS®-Matrimid®-Zn2+ nanocomposite membrane (20wt% POSS®-Matrimid®-0.3M ZnCl2), in which, the selectivity of CO2/CH4 and O2/N2 increases by 70% and 30%, respectively, when compared with untreated nanocomposite membrane (20wt% POSS®-Matrimid®). © 2010 Elsevier B.V.
Source Title: Journal of Membrane Science
ISSN: 03767388
DOI: 10.1016/j.memsci.2010.03.021
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