Functionalized copolyimide membranes for the separation of gaseous and liquid mixtures.

ABSTRACT: Functionalized copolyimides continue to attract much attention as membrane materials because they can fulfill the demands for industrial applications. Thus not only good separation characteristics but also high temperature stability and chemical resistance are required. Furthermore, it is very important that membrane materials are resistant to plasticization since it has been shown that this phenomenon leads to a significant increase in permeability with a dramatic loss in selectivity. Plasticization effects occur with most polymer membranes at high CO₂ concentrations and pressures, respectively. Plasticization effects are also observed with higher hydrocarbons such as propylene, propane, aromatics or sulfur containing aromatics. Unfortunately, these components are present in mixtures of h

SUBMITTER: Schmeling N 

PROVIDER: S-EPMC2956472 | biostudies-literature | 2010 Aug

REPOSITORIES: biostudies-literature