1. School of Chemical Engineering and school of Advanced Institute of Materials Science Changchun University of Technology Changchun 130012 P. R. China
2. Dazheng Pharmaceutical Technology Co. Ltd. Changchun 130000 P. R. China
3. Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China