Polyhedral oligomeric silsesquioxane-based fluoroimide-containing poly(urethane-imide) hybrid membranes: Synthesis, characterization and gas-transport properties

- The phase separation and surface roughness are affected by imide and POSS content.
- Results show that the relationship between surface morphology and transport properties.
- Density, surface energy and free volume are correlated with separation studies.
- Improved the permeability of O2, CO2 and selectivity of O2/N2 and CO2/N2.