乙烯

Effect of Support Resistance ＆ Coating Thickness on Ethylene/Nitrogen Separation of PDMS Composite Membranespolydimethylsiloxane;composite Membrane;resistance model;membrane thickness;ethylene;The effect of porous support layer resistance and PDMS (polydimethylsiloxane) coating thickness on ethylene/nitrogen separation of composite membranes was studied with the model of Pinnau and Wijmans〔1〕. To control the support resistance (or permeance), PES porous membranes were prepared by phase inversion process with various PES/NMP dope concentrations.