In this paper, first, the pure dense membrane by
polystyrene was made through the solution casting method
at various concentrations and then the silica nanoparticles
were added in different weight percentages to the pure membrane. The best permeability result for CO2 and N2 in pure
polymer membrane was achieved in concentration of 10 wt%
of high-impact polystyrene (HPS). Also, the impact of increasing the pressure of the tested gases was examined on
permeability and selectivity of nanocomposite membrane.
The results indicated, with the pressure increasing, the permeability coefficient of tested gases is reduced. The best selectivity of CO2 to N2 was obtained in nanocomposite membrane
containing 4 wt% silica nanoparticles in HPS.
