1. Department of Mechanical Engineering, Faculty of Systems Science and Technology Akita Prefectural University Akita Japan
2. Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing People's Republic of China
3. College of Petrochemical Technology Lanzhou University of Technology Lanzhou People's Republic of China
4. The State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan University Chengdu People's Republic of China