1. College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
2. College of Materials Science and Engineering, National Joint Engineering Research Center for Highly Efficient Utilization Technology of Forestry Resource, Southwest Forestry University, Kunming 650224, China
3. School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing400074, China
4. Analytical & Testing Centre, Sichuan University, Chengdu, Sichuan 610064, China