1. Department of Chemical & Materials Engineering, National Central University, Jhong-Li, Taoyuan 320, Taiwan
2. R&D Center for Membrane Technology, Chung Yuan Christian University, 200 Chung Pei Rd., Chung-Li City 32023, Taiwan
3. NCU-Covestro Research Center, National Central University, Jhong-Li, Taoyuan 320, Taiwan