文献类型：期刊文献

英文题名：Isolation and Characterization of Corncob Cellulose Fibers using Microwave-Assisted Chemical Treatments

作者：Li, Meng[1];Cheng, Yan-Ling[2];Fu, Nan[3];Li, Dong[1];Adhikari, Benu[4];Chen, Xiao Dong[3]

第一作者：Li, Meng

通讯作者：Li, D[1]

机构：[1]China Agr Univ, Coll Engn, Natl Energy R&D Ctr Nonfood Biomass, Beijing 100083, Peoples R China;[2]Beijing Union Univ, Coll Biochem Engn, Beijing 100023, Peoples R China;[3]Soochow Univ, Sch Chem & Environm Engn, Suzhou, Jiangsu, Peoples R China;[4]RMIT Univ, Sch Appl Sci, Melbourne, Vic 3001, Australia

第一机构：China Agr Univ, Coll Engn, Natl Energy R&D Ctr Nonfood Biomass, Beijing 100083, Peoples R China

通讯机构：[1]corresponding author), China Agr Univ, Coll Engn, Natl Energy R&D Ctr Nonfood Biomass, 17 Qinghua Donglu, Beijing 100083, Peoples R China.

年份：2014

卷号：10

期号：3

起止页码：427-436

外文期刊名：INTERNATIONAL JOURNAL OF FOOD ENGINEERING

收录：;EI(收录号：20144200095835);Scopus(收录号：2-s2.0-84907671551);WOS:【SCI-EXPANDED(收录号:WOS:000341564500008)】；

基金：This research was supported by Beijing Municipal Science and Technology Commission Project (Z121100001312010), High Technology Research and Development Program of China (2011AA100802), Science and Technology Support Project of China (2013BAD10B03), and Commonwealth Guild Agricultural Scientific Research Program of China (201003077).

语种：英文

外文关键词：cellulose fibers; corncob; microwave; thermal degradation; crystallinity

摘要：Cellulose fibers were obtained from corncob by using microwave-assisted chemical treatments (microwave-assisted alkaline pretreatment and microwave-assisted bleaching). These treatments efficiently removed the hemicellulose and lignin from the original corncob and increased the cellulose fiber content. The morphology, chemical structure, degree of crystallinity and thermal degradation characteristics of the resultant cellulose fibers were studied by using field emission scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction and thermogravimetric analysis. These microwave-assisted chemical treatments decreased the diameter of the cellulose fibers from 25-125 mu m to 10-20 mu m. The crystallinity of the corncob cellulose fibers increased from 32.7% to 73% due to the chemical treatments. The degradation temperature of the cellulose fibers was > 260 degrees C. The cellulose fibers obtained from these treatments can be used as biocomposites in reinforced polymer manufacturing.