Preparation and Characterization of Hollow Fiber Membrane for Gas Separation Using Polyimide

摘要

Gas separation using polymeric membranes has achieved important commercial success in some industrial processes since the first commercial-scale membrane gas separation system was produced in the late of 1970s. In order to extend its application and compete successfully with traditional gas separation processes such as cryogenics, pressure swing adsorption and absorption, great attention has been made in fabricating high separation performance membranes in both academia and industry. Development of ultra-thin skinned asymmetric hollow fiber membranes from highly selective polymers has been a challenge in gas separation membrane processes [1]. Although thousands of polymers exhibit perm-selective properties for gas mixtures, only a few glassy polymers are useful in making asymmetric gas separation membranes, particularly, polyimide (Pl), polysulfone (PSf), polyethersulfone (PESf), and polyetherimide (PEl).