文献类型：期刊文献

英文题名：Isolation of High-Purity Cellulose Nanofibers from Wheat Straw through the Combined Environmentally Friendly Methods of Steam Explosion, Microwave-Assisted Hydrolysis, and Microfluidization

作者：Liu, Qi[1,2,3,4,5] Lu, Yun[6] Aguedo, Mario[5] Jacquet, Nicolas[5] Ouyang, Canbin[7,8] He, Wenqing[1,2] Yan, Changrong[1,2] Bai, Wenbo[1,2] Guo, Rui[1,2] Goffin, Dorothee[3,4,5] Song, Jiqing[1,2] Richel, Aurore[5]

第一作者：Liu, Qi

通信作者：Song, JQ[1];Song, JQ[2];Goffin, D[3];Goffin, D[4];Goffin, D[5];Richel, A[5]

机构：[1]Chinese Acad Agr Sci, Key Lab Dryland Agr, Minist Agr, Natl Engn Lab Crop Efficient Water Use & Disaster, 12 Zhongguancun South St, Beijing 100081, Peoples R China;[2]Chinese Acad Agr Sci, Key Lab Prevent & Control Residual Pollut Agr Fil, Inst Environm & Sustainable Dev Agr, Minist Agr, 12 Zhongguancun South St, Beijing 100081, Peoples R China;[3]Univ Liege, TERRA Res Ctr, Gembloux Agrobio Tech, Passage Deportes 2B, B-5030 Gembloux, Belgium;[4]Univ Liege, Lab Gastron Sci, Gembloux Agrobio Tech, Passage Deportes 2B, B-5030 Gembloux, Belgium;[5]Univ Liege, Unit Biomass & Green Technol, Gembloux Agrobio Tech, Passage Deportes 2B, B-5030 Gembloux, Belgium;[6]Chinese Acad Forestry, Res Inst Wood Ind, 1 Dongxiaofu,Xiangshan Rd, Beijing 100091, Peoples R China;[7]Chinese Acad Agr Sci, Minist Agr, Inst Plant Protect, Dept Pesticides, 2 Yuanmingyuan West Rd, Beijing 100193, Peoples R China;[8]Chinese Acad Agr Sci, State Key Lab Biol Plant Dis & Insect Pests, 2 Yuanmingyuan West Rd, Beijing 100193, Peoples R China

年份：2017

卷号：5

期号：7

起止页码：6183-6191

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20172803927452);Scopus(收录号：2-s2.0-85021948828);WOS:【SCI-EXPANDED(收录号:WOS:000405139100064)】；

基金：This work was supported by the Special Fund for Agro-scientific Research in the Public Interest (No. 201503105), National Natural Science Foundation of China (No.41601226, No. 31570328), and Central Public-interest Scientific Institution Basal Research Fund (No. Y2017PT26). The experimental work was mainly performed in the Unit of Biomass and Green Technologies at Gembloux Agro-Bio Tech-University of Liege in Belgium and was supported by the agreement between Chinese Academy of Agricultural Sciences (CAAS) and Gembloux Agro-Bio Tech-University of Liege (GxABT-ULg). We thank the Gembloux Agro-Bio Tech-University of Liege, specifically the research platform AgriculturelsLife, Unit of Biomass and Green Technologies, for funding and scientific stay in Belgium that made this work possible.

语种：英文

外文关键词：Wheat straw; Cellulose nanofibers; High purity; Steam explosion; Microwave-assisted hydrolysis; Microfluidization

摘要：High-purity cellulose nanofibers were isolated from wheat straw through an environmentally friendly, multistep treatment process that combined steam explosion, microwave-assisted hydrolysis, and micro fluidization. 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 noncellulosic 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, multistep treatment process yields nanofibers with potential advanced applications.