标题：Nanocrystalline cellulose from aspen kraft pulp and its application in deinked pulp
作者：Xu, Q.;Gao, Y.;Qin, M.;Wu, K.;Fu, Y.;Zhao, J.
作者机构：Key Laboratory of Paper Science and Technology of Ministry of Education, Shandong Polytechnic University, University Park of Sci
来源：International Journal of Biological Macromolecules: Structure, Function and Interactions
关键词：Aspen kraft pulp;Deinked pulp;Nanocrystalline cellulose
摘要：Nanocrystalline cellulose (NCC) isolated from bleached aspen kraft pulp was characterized, and its application as pulp strengthening additive and retention aid was investigated. Results showed that NCC with high crystallinity of more than 80% can be obtained using 64. wt% sulfuric acid. The structure of nanocrystalline cellulose is parallelepiped rod-like, and their cross-sectional dimension is in the nanometer range with a high aspect ratio. The formation of microparticle retention systems during the application of NCC together with cationic polyacrylamide and cationic starch in deinked pulp was able to further improve pulp retention and strength properties without negative influence on the drainage.