Propylene in Polyphenylene Oxides Membranes: Unusual Permeability vs. Pressure Behaviour
Journal of Membrane Science
, E-ISSN: 1873-3123
||Gas separation, Polyphenylene oxides membranes, Pressure-permeability dependence, Propylene, Swelling
Boreskov Institute of Catalysis, Novosibirsk 630090, Russian Federation
Novosibirsk State University, Novosibirsk 630090, Russian Federation
International Science Foundation
The dependencies of propylene permeability coefficients vs. pressure at 298 K in the films of glassy polymers-polyphenylene oxides, poly (amide imide) and poly (vinyltrimethylsilane) — exhibit a sharp multifold rise (“permeability crisis”) at ca. 0.45 MPa. The analogous dependence for the rubbery polyethylene is represented by the monotonously rising smooth curve. No “permeability crisis” was observed as well for the pressure-permeability dependencies of Ar, O2, N2, C2H4 and C2H6 in the polyphenylene oxides at pressures up to 1 MPa.