First Report on one-stage fabricating Hollow Fiber polyurethane Inclusion Membrane
Volume Title: 1
1Polymer Engineering Department, Faculty of Petroleum and Gas (Gachsaran), Yasouj University, Gachsaran 75813-56001, Iran
2Polymer Department, Islamic Azad University, Science and Research Branch Tehran, Tehran, Iran
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.