1. School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
2. College of Chemistry and Environment, Southwest Minzu University, Chengdu, Sichuan 610041, P. R. China
3. School of Biological and Chemical Engineering, Panzhihua University, Panzhihua 617000, P. R. China
4. State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China