Gas Separation Properties of Hollow-Fiber Membranes of Polypropylene and Polycarbonate by Melt-Spinning Method

摘要

This work represents determination of gas separation properties of polypropylene and polycarbonate hollow fiber membranes. Hollow fibers were prepared by melt-spinning method at speed of 100-110 m/min. To improve gas separation properties of hollow fibers, silica nanoparticles were introduced into polycarbonate hollow fibers. Gas permeabilities of O2, N2 and CO2 were measured to determine the gas separation properties of obtained hollow fibers. The polypropylene hollow fibers showed the selectivity of 13.25 for CO2/N2 and 3.75 for O2/N2. Adding 1 wt, % silica nanoparticles into polycarbonate hollow fibers improved the gas separation properties and increased the selectivity of CO2/N2 from 20.50-25.23. Higher selectivity could be achieved by proper distribution of nanoparticles into membrane structure.