first report on one-stage fabricating hollow fiber polyurethane inclusion membrane

A novel polyurethane inclusion membrane (pim) was developed# the preparation method, called one step fabrication method, is an in-situ crosslinking polymerization between methylene diphenyl diisocyanate and high-molecular-weight green polyol (gpo) which in turn derived from a reaction between an epoxidized castor oil and a cellulose acetate, to prepare a hollow fiber pim# using this method, a commercial hollow fiber polymer inclusion membrane, with high mechanical stability, can be easily fabricated# thus, a crosslinked-polyurethane as a polymer base encompasses benzene-18-crown-6 as a carrier, and an 1-butyl-3-methylimidazolium chloride ionic liquid as a plasticizer# after evaporating solvent, a dense hollow fiber pim containing il and crown ether was obtained# the transport characteristics of the hollow fiber pim were evaluated by the separation of ca2+ ions# the result showed that the hollow fiber pim allowed an efficient ca2+ transport from the feed solution towards the strip phase, indicating that the hollow fiber were successfully prepared by in-situ crosslinking one-step process#