1. Key Lab of Rubber‐plasticsMinistry of Education/Shandong Provincial Key Lab of Rubber‐plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology Qingdao 266042 China
2. Public Laboratory of Bioenergy and BiofuelsQingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences Qingdao 266101 China