1. College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, P. R. China
2. Key Laboratory of Green-chemistry Materials in University of Yunnan Province, Yunnan Minzu University, Kunming 650500, P. R. China
3. National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650500, P. R. China