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

作　　者：Xiaran Miao Jinyou Lin Fenggang Bian 

机构地区：[1]Shanghai Synchrotron Radiation Facility of Zhangjiang Lab,Shanghai Advanced Research Institute,Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201204,China

出　　处：《Journal of Bioresources and Bioproducts》2020年第1期26-36,共11页生物质资源与工程（英文）

基　　金：This research was supported by National Nature Science Foundation of China(No.51773221);National Key R&D Program of China(No.2018YFB0704200);Youth Innovation Promotion Association CAS(No.2017308).

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 re-sultant 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 ob-tained 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.

关 键 词：CELLULOSE Cellulose nanofibrils Wheat straw Cellulose aerogels 

分 类 号：TQ35[化学工程]