Thermal dependence of carbon dioxide transport through a dense polymeric membrane

Abstract

Polymeric gas separation membranes are currently used commercially for CO2/CH4 separation in a number of operations worldwide. However, a major technical hurdle associated with such membranes is the plasticization of the membrane with increasing concentrations of polar gases such as CO2. Significant research efforts are being conducted into characterizing and avoiding the plasticization phenomena. This chapter presents a study that investigates the permeability of polyimide membranes formed from a readily available commercial membrane Matrimid 5218 in carbon dioxide at temperatures up to 100°C and pressures up to 2500kPa. In this study, membranes were tested in both as cast and thermally ann..