1. State Key Laboratory of Bio-fibers and Eco-textiles College of Materials Science and Engineering Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological textiles Institute of Marine Biobased Materials Qingdao University Qingdao 266071 P. R. China
2. CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China