Understanding Longitudinal Wood Fiber Ultra-structure for Producing Cellulose Nanofibrils Using Disk Milling with Diluted Acid Prehydrolysis

• DOI: 10.1038/srep35602
• Publication Date: 2016-10-31T10:55:44Z
• Authors: Yanlin Qin; Xueqing Qiu; J.Y. Zhu
• Keywords: 02 engineering and technology; 0210 nano-technology; Article

Abstract Here we used dilute oxalic acid to pretreat a kraft bleached Eucalyptus pulp (BEP) fibers facilitate mechanical fibrillation in producing cellulose nanofibrils using disk milling with substantial energy savings. We successfully applied reaction kinetics based combined hydrolysis factor ( CHF X ) as severity quantitatively control xylan dissolution and BEP fibril deploymerization. More importantly, were able accurately predict the degree of polymerization (DP) disk-milled fibrils time or consumption. Experimentally determined ratio DP number mean height (diameter d ), / , an aspect measurer, independent processing conditions. Therefore, hypothesize that have longitudinal hierarchical structure lateral direction. Acid did not substantially cut “natural” chain length fibrils. This model provides support for weak production reduced input without negatively affecting strength.