1. College of Chemical Engineering; Qingdao University of Science and Technology; Qingdao 266042 China
2. Institute of High Performance Polymers; Qingdao University of Science and Technology; Qingdao 266042 China
3. CP Pharmaceutical Qingdao Co., LTD; Qingdao 266500 China
4. European Institute of Membranes, UMR 5635, University of Montpellier, CNRS, ENSCM; 34095 Montpellier Cedex 5 France