1. College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
2. Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, Analyses and Testing Center, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
3. Macromolecules Innovation Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
4. Department of Sustainable Biomaterials, Virginia Tech, Blacksburg, Virginia 24061, United States