1. College of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang, Henan 471023, P. R. China
2. Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, Henan 450002, P. R. China
3. College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, Henan 471934, P. R. China