Characterization and gas permeation properties of UV-cured fluorine-containing telechelic polyimide membranes with a crosslinker

Abstract

The characterization and gas permeation properties of ultraviolet (UV)-cured fluorine-containing telechelic polyimide membranes and end-capped with a crosslinker with acryloyl groups were investigated. Membrane formation property was improved by the addition of crosslinker by using UV irradiation. The densities of UV-cured membranes were almost similar to each other, and high gel fraction was shown on the UV-cured membranes. This result suggests that the crosslinker promotes crosslink reaction at the polymer chain ends and does not induce appreciable membrane densification. Furthermore, the gas permeability of the UV-cured membranes was higher than that of the membrane without the crosslinke..