Both NE-DCVMD and E-DCVMD density profiles exhibit non-uniform distribution, with random peaks along the membrane. This behavior is indicative of the porous and amorphous nature of the polymer membrane, which lacks the regular density profile peaks seen in more structured crystalline systems. Additionally, the density profiles reveal that CO 2 molecules exhibit significantly stronger adsorption within the membrane compared to N 2 , despite the higher N 2 concentration at the inlet. A more detailed analysis of the solubility and interaction energies of these gases will be provided in a later section.