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Preparation of PEBA/PDMS Blend Membranes for Separation of Carbon Dioxide  

Park, You-In (Environment & Resources Research Center, Korea Research Institute of Chemical Technology)
Kang, Ha-Sung (Environment & Resources Research Center, Korea Research Institute of Chemical Technology)
Nam, Mi-Yeon (Environment & Resources Research Center, Korea Research Institute of Chemical Technology)
Lee, Eun-Woo (Environment & Resources Research Center, Korea Research Institute of Chemical Technology)
Kim, Beom-Sik (Environment & Resources Research Center, Korea Research Institute of Chemical Technology)
Lee, Sang-Hak (Environment & Resources Research Center, Korea Research Institute of Chemical Technology)
Suh, Jeong-Kwon (Environment & Resources Research Center, Korea Research Institute of Chemical Technology)
Suh, Dong-Hak (Department of Chemical Engineering, Hanyang University)
Feng, Xianshe (Department of Chemical Engineering, University of Waterloo)
Publication Information
Membrane Journal / v.19, no.1, 2009 , pp. 83-88 More about this Journal
Abstract
Poly(ether block amide) (PEBA)/poly(dimethyl-siloxane) (PDMS) blend membranes (PEBA : PDMS = 5 : 2, 6 : 1 wt%) were prepared through the solution-casting and phase inversion process in order to demonstrate their superior performance in carbon dioxide separation. PDMS and PEBA (4033) were also prepared by the same method using n-butanol as a solvent. To study the gas permeation properties, the membranes were characterized with SEM and tested with carbon dioxide and nitrogen at $35^{\circ}C$ and pressure ranging from 3 to 5 atm. In conclusion, PEBA/PDMS blend membranes were shown to have selectivity for $CO_2/N_2$ separation that is 4 to 5 magnitudes greater than that of PDMS membrane at 3 atm.
Keywords
poly(ether block amide); poly(dimethyl siloxane); blend membrane; carbon dioxide;
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