Utilization of discarded crop straw to produce cellulose nanofibrils and their assemblies

被引：133
作者：
Miao X. [1 ]
Lin J. [1 ]
Bian F. [1 ]
机构：
[1] Shanghai Synchrotron Radiation Facility of Zhangjiang Lab, Shanghai Advanced Research Institute, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai
来源：
Journal of Bioresources and Bioproducts | 2020年 / 5卷 / 01期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Cellulose; Cellulose aerogels; Cellulose nanofibrils; Wheat straw;
D O I：
10.1016/j.jobab.2020.03.003
中图分类号：
学科分类号：
摘要：
A tremendous amount of wheat straw (WS) has been generated by wheat crops every year, while only a small percentage is being used in applications, and most get burned on the field, causing a large amount of the exhaust gas that pollutes the environment. Herein, we report on the extraction of cellulose nanofibrils (CNF) from the alkali treated WS by a combination of 2,2,6,6-tetramethylpyperidine-1-oxyl (TEMPO)-oxidation and mechanical disintegration method. The crystalline structures, thermal properties, natural charge of the CNF were examined. The resultant nano-building blocks of the CNF was assembled into macroscopic cellulose materials, i.e., film, aerogel, and filament in this work. Furthermore, the morphologies and microstructues as well as other properties of these three kinds of the CNF assemblies were investigated. The obtained CNF and its assemblies showed a potential application in new materials areas. This work explored a new way to utilize the discarded WS instead of being burned. © 2020 The Author(s)
引用
收藏
页码：26 / 36
页数：10
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