1. Key Laboratory of Polymer Material Advanced Manufacturing Technology of Shandong Provincial College of Electromechanical Engineering College of Sino‐German Science and Technology Qingdao University of Science and Technology Qingdao 266061 Shandong P. R. China
2. State Key Laboratory Base of Eco‐chemical Engineering College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 Shandong P. R. China