Efficient Cleavage of Strong Hydrogen Bonds in Cotton by Deep Eutectic Solvents and Facile Fabrication of Cellulose Nanocrystals in High Yields

Release time:2017-07-20 Hits:

Impact Factor:7.1

DOI number:10.1021/acssuschemeng.7b00954

Affiliation of Author(s):东北林业大学

Journal:ACS Sustainable Chemistry & Engineering

Abstract:The content of cellulose in biomass is important for producing nanocellulose in high yield. Cotton fibers containing ultrahigh purity (~95%) cellulose are ideal feedstock for nanocellulose production. However, the presence of strong hydrogen bonding between the cellulose chains limits the use of cotton fibers for the production of nanocellulose in a facile and mild process. Here, efficient cleavage of the strong hydrogen bonds in cotton and ultrafast fabrication of cellulose nanocrystals (CNCs) with a high yield of 74.2% were first realized through 3-min microwave-assisted deep eutectic solvent pretreatment and a subsequent high-intensity ultrasonication process. The obtained CNCs had diameters of 3–25 nm and lengths ranged between 100 and 350 nm. The CNCs also displayed relative crystallinity of 82% and the thermal degradation temperature started from 320 °C. The study provides a green and efficient method for the mass production of cotton CNCs, and is expected to contribute to improving the refinery utilization of cotton feedstock.

Co-author:Bingtuo Guo,Qinqin Xia,Juan Meng,Wenshuai Chen,Shouxin Liu,Qingwen Wang,Yixing Liu,Jian Li

First Author:Yongzhuang Liu

Indexed by:Journal paper

Correspondence Author:Haipeng Yu

Document Type:J

Volume:5

Issue:9

Page Number:7623-7631

Translation or Not:no

Date of Publication:2017-01-01

Included Journals:SCI

Links to published journals:https://pubs.acs.org/doi/10.1021/acssuschemeng.7b00954