Mixed gas sorption in glassy polymeric membranes: I. CO2/CH4 and n-C4/CH4 mixtures sorption in poly(1-trimethylsilyl-1-propyne) (PTMSP)

Second component effects on the solubility-selectivity of CO2/CH4 mixtures in two glassy polymers: PTMSP (this work) and PPO (literature). Data were measured at different compositions of the CO2/CH4 gas mixture, at room temperature, and reported as the ratio between mixed gas and pure gas solubility-selectivity, versus the ratio between CO2 and CH4 concentration in the polymer.195