Effect of p -TsOH pretreatment on separation of bagasse components and preparation of nanocellulose filaments
Author(s) -
Chengqi Feng,
Juan Du,
Shuai Wei,
Chengrong Qin,
Chen Liang,
Shuangquan Yao
Publication year - 2020
Publication title -
royal society open science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 51
ISSN - 2054-5703
DOI - 10.1098/rsos.200967
Subject(s) - nanocellulose , bagasse , cellulose , chemical engineering , separation (statistics) , materials science , chemistry , polymer science , nanotechnology , pulp and paper industry , organic chemistry , computer science , engineering , machine learning
The efficient separation of bagasse components was achieved by p -toluenesulfonic acid ( p -TsOH) pretreatment. The effects of p -TsOH dosage, reaction temperature and reaction time on cellulose, hemicellulose and lignin contents were studied. Eighty-five per cent of lignin was dissolved, whereas the cellulose loss was minimal (less than 8.1%). Cellulose-rich water-insoluble residual solids were obtained. The degree of polymerization of cellulose decreased slightly, but the crystallinity index (CrI) increased from 52.0% to 68.1%. It indicated that the highly efficient delignification of bagasse was achieved by p -TsOH pretreatment. The nanocellulose filaments (CNFs) were produced by the treated samples. The physico-chemical properties of CNFs were characterized by transmission electron microscopy and thermogravimetric analysis. The results show that the CNFs have smaller average size and higher thermal stability. It provides a new method for CNFs.
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