Article (Scientific journals)
Isolation of high-purity cellulose nanofibers from wheat straw through the combined environmentally friendly methods of steam explosion, microwave-assisted hydrolysis, and microfluidization
Liu, Qi; Lu, Yun; Aguedo, Mario et al.
2017In ACS Sustainable Chemistry and Engineering
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Keywords :
wheat straw; cellulose nanofibers; steam explosion; microwave-assisted hydrolysis; microfluidization
Abstract :
[en] High-purity cellulose nanofibers were isolated from wheat straw through an environmentally friendly, multi-step treatment process that combined steam explosion, microwave-assisted hydrolysis, and microfluidization. The cellulose content of the processed nanofibers increased from 44.81% to 94.23%, whereas the hemicellulose and lignin contents significantly decreased. Scanning electron microscopy revealed the effects of the isolation treatments on fiber morphology and width. Atomic force microscopy was used to observe the changes in the components, surface roughness, and crystallinity of the fibers. Transmission electron microscopy showed long, loose nanofiber bundles that were 10–40 nm wide with an average individual diameter of 5.42 nm. Fourier transform infrared spectroscopy showed that non-cellulosic components were effectively removed. X-ray diffraction analysis revealed the improved crystallinity of the processed fibers, as well as the partial crystalline transformation of cellulose I to cellulose II. Thermogravimetric analysis and derivative thermogravimetric results showed the enhanced thermal properties of the nanofibers. The removal of hemicellulose and lignin increased the crystallinity of the fibers, thus enhancing the thermal properties of the processed fibers. Results indicated that the efficient, environmentally friendly multi-step treatment process yields nanofibers with potential advanced applications.
Disciplines :
Chemistry
Author, co-author :
Liu, Qi;  Chinese Academy of Agricultural Sciences > Institute of Environment and Sustainable Development in Agriculture > National Engineering Laboratory for Crop Efficient Water Use and Disaster Mitigation
Lu, Yun;  Chinese Academy of Forestry > Research Institute of Wood Industry
Aguedo, Mario ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Microbial, food and biobased technologies
Jacquet, Nicolas  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Microbial, food and biobased technologies
Canbin, Ouyang;  Chinese Academy of Agricultural Sciences > Department of Pesticides > Institute of Plant Protection
He, Wenqing;  Chinese Academy of Agricultural Sciences > Institute of Environment and Sustainable Development in Agriculture > National Engineering Laboratory for Crop Efficient Water Use and Disaster Mitigation
Yan, Changrong;  Chinese Academy of Agricultural Sciences > Institute of Environment and Sustainable Development in Agriculture > National Engineering Laboratory for Crop Efficient Water Use and Disaster Mitigation
Bai, Wenbo;  Chinese Academy of Agricultural Sciences > Institute of Environment and Sustainable Development in Agriculture > National Engineering Laboratory for Crop Efficient Water Use and Disaster Mitigation
Guo, Rui;  Chinese Academy of Agricultural Sciences > Institute of Environment and Sustainable Development in Agriculture > National Engineering Laboratory for Crop Efficient Water Use and Disaster Mitigation
Goffin, Dorothée ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Microbial, food and biobased technologies
Song, Jiqing;  Chinese Academy of Agricultural Sciences > Institute of Environment and Sustainable Development in Agriculture > National Engineering Laboratory for Crop Efficient Water Use and Disaster Mitigation
Richel, Aurore  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Microbial, food and biobased technologies
Language :
English
Title :
Isolation of high-purity cellulose nanofibers from wheat straw through the combined environmentally friendly methods of steam explosion, microwave-assisted hydrolysis, and microfluidization
Publication date :
29 May 2017
Journal title :
ACS Sustainable Chemistry and Engineering
eISSN :
2168-0485
Publisher :
American Chemical Society, Washington, United States - District of Columbia
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 11 December 2018

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