1. College of Materials Science and Engineering, Chongqing University, Chongqing 400044, P. R. China
2. School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, P. R. China
3. Key Laboratory of Biorheological Science and Technology, Chongqing University, Chongqing 400044, P. R. China