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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2015.25.6.547

Characterization and Preparation of PEG-Polyimide Copolymer Asymmetric Flat Sheet Membranes for Carbon Dioxide Separation  

Park, Jeong Ho (Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
Kim, Deuk Ju (Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
Nam, Sang Yong (Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
Publication Information
Membrane Journal / v.25, no.6, 2015 , pp. 547-557 More about this Journal
Abstract
In this study, we synthesized polyimide with high carbon dioxide gas transport property using 2,2-bis(3,4-carboxylphenyl) hexafluoropropane, 2,3,5,6-tetramethyl-1,4-phenylenediamine and poly(ethylene glycol) bis(3-aminopropyl) terminated and then we calculated solubility parameter of synthesized polymer and non-solvent phase separation coefficient to determine proper solvent for preparation of asymmetric membrane, also we measured the viscosity of the polymer solution to check polymer contents in membrane solution and prepare asymmetric membrane with $LiNO_3$ additives. The morphology and gas separation property of membrane prepared by phase separation method was confirmed using Field Emission Scanning Electron Microsope and the single gas permeation measurement apparatus. We confirmed that the carbon dioxide permeance of the membrane increased and the selectivity showed little change with decreasing of the volatile solvent contents.
Keywords
Polyimide; nonsolvent induced phase separation; asymmetric membrane; gas separation;
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Times Cited By KSCI : 6  (Citation Analysis)
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