Effect of sorption behavior on transport properties of gases in polymeric membranes

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Title:	Effect of sorption behavior on transport properties of gases in polymeric membranes
Authors:	Hu,CC;Fu,YJ;Lee,KR;Ruaan,RC;Lai,JY
Contributors:	化學工程與材料工程學系
Keywords:	BISPHENOL-A;GLASSY-POLYMERS;FREE-VOLUME;PERMEABILITY;SEPARATIONS;PERMEATION
Date:	2009
Issue Date:	2010-06-29 17:26:46 (UTC+8)
Publisher:	中央大學
Abstract:	The purpose of this work was to study the relationships between the gas sorption and transport properties in polymeric membranes. The intrinsic gas transport properties: permeation, diffusion, and sorption in a series of dense membranes with various carbonyl group densities were investigated. The poly(methyl methacrylate) (PMMA), polycarbonate (PC), and cyclic olefin copolymer (COC) membranes have similar helium permeability, but the helium permeability of poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) membrane was very high. The variation of permeability for these four membranes consists with their fraction free volume. In this study, a direct relationship was found between the carbonyl group density and Langmuir affinity constant. Furthermore, dependence of the fractional free volume on the membrane Langmuir capacity constant was observed. (C) 2009 Elsevier Ltd. All rights reserved.
Relation:	POLYMER
Appears in Collections:	[National Central University Department of Chemical & Materials Engineering] journal & Dissertation

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