1. Institute of Chemical Engineering; Kunming University of Science and Technology; Kunming 650550 China
2. Engineering Research Center of Biopolymer Functional Materials of Yunnan; Yunnan University of Nationalities; Kunming Yunnan 650500 China
3. State Key Laboratory of Oral Diseases; West China Hospital of Stomatology, Sichuan University; Chengdu 610041 China