1. College of Materials Science and Engineering, Liaoning Technical University, Fuxin123000, P. R. China
2. Shandong Weigao Group Medical Polymer Co., Ltd, Weihai264210, P. R. China
3. Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun130022, P. R. China
4. University of Science and Technology of China, Hefei230026, P. R. China