1. School of Textile Materials and Engineering, Wuyi University, Jiangmen 529020, P. R. China
2. School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, P. R. China
3. Beijing Engineering Research Centre of Cellulose and Its Derivatives, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
4. State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, P. R. China