1. Polymer Materials and Engineering Department School of Materials Science and Engineering Chang'an University Xi'an 710064 P. R. China
2. Key Laboratory of Bio‐Based Polymeric Materials Technology and Application of Zhejiang Province Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 P. R. China
3. College of Chemistry Chemical Engineering and Environment Minnan Normal University Zhangzhou 363000 P. R. China