Tunable composite membranes for gas separations

摘要

Poly 2-(3-thienyl)ethylacetate (PAET) was synthesized and solution cast as thin films to form dense membranes. These membranes are mechanically robust and are redox active, holding out promise as gas separation materials. The permeability properties of PAET membranes were evaluated for N(sub 2) (0.048 (+-) 0.008 Barrers), O(sub 2) (0.24 (+-) 0.02 Barrers), CH(sub 4) (0.081 (+-) 0.005 Barrers), and CO(sub 2) (1.4 (+-) 0.1 Barrers). The corresponding selectivity values ((alpha)) were: O(sub 2)/N(sub 2) = 5.1, CO(sub 2)/N(sub 2) = 29, and CO(sub 2)/CH(sub 4) = 18.