Gas Separation by Membrane
Viewing polymeric materials magnified enough to be seen molecularlevel, it can be observed that there exists the space between molecules,along which gases can pass through. Accordingly, when gases, foundin both high and low partial pressure side, are existent separatedwith a pinhole-free polymer membrane, gases move from the high partialpressure side to the low partial pressure side due to the differentialpressure.
Our own gas separation-oriented membranes have permeability ofvarious gases as shown in the example data.
Compared with other gases, H20, H2, He and C02 enjoy a high permeability,which is why we can expect efficient separation of such permeablegases from mixed gases.