1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University 2999 North Renmin Road, Songjiang Shanghai 201620 P. R. China
2. Key Laboratory of Polymer Materials and Products of Universities in Fujian Fujian University of Technology 33 Xuefu South Road, New University District Fujian 350118 P. R. China
3. Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201204 China
4. Jinan Jinquan Biotechnology Limited Company 1–713, Building 1, High‐Level Talents Research and Development Base, No. 322 Shunfeng Road, Jinan Innovation Zone Jinan Shandong 250101 P. R. China