1. South China University of Technology; State Key Laboratory of Pulp and Paper Engineering; Wushan Road 381 Guangzhou 510640 PR China
2. North Carolina State University; Departments of Chemistry and Forest Biomaterials, Laboratory of Soft Materials and Green Chemistry; 3108 Biltmore Hall, Campus Box 8005 Raleigh NC 27695 USA
3. Qilu University of Technology; Key Laboratory of Pulp and Paper Science and Technology of the Ministry of Education; University Road 3501, Jinan 250353 PR China