Polyimides provide a great platform for developing new polymeric membrane materials and have been studied extensively for various gas separations. However, most results found in literature only show pure-gas properties of isotropic polyimide films. Those films are typically >10 �m and cannot be used for practical applications. In addition, polyimide mixed-gas performance under practical operating conditions can deviate significantly from their pure-gas properties as a result of plasiticization or competitive sorption. At MTR, our focus is to develop industrially-viable composite membranes using promising polymeric membrane materials. To this end, we have developed robust composite membranes using polyimide-based materials. Pure and mixed-gas performances for these composite membranes show great potential for CO2/CH4 and H2/CO2 separations. In this talk, the effects of copolymer content, post-treatment method, as well as the feed pressure and CO2 content of multi-component feed streams, on membrane performance will be discussed. The challenges of using such polymeric membranes will also be addressed.

Polyimide-based composite membranes for gas separations

245th National Meeting (2013)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.