کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5185916 1381090 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of sorption behavior on transport properties of gases in polymeric membranes
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Effect of sorption behavior on transport properties of gases in polymeric membranes
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 50, Issue 22, 20 October 2009, Pages 5308-5313
نویسندگان
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