文献类型：期刊文献

英文题名：Characteristic comparison of lignocellulose nanofibrils from wheat straw having different mechanical pretreatments

作者：Yan, Ming[1] Wu, Ting[2] Ma, Jinxia[1] Lu, Hailong[2,3] Zhou, Xiaofan[1]

第一作者：Yan, Ming

通信作者：Zhou, X.[1]

机构：[1] Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, College of Light Industry and Food, Nanjing Forestry University, Nanjing, China; [2] Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Jiangsu Province Key Lab of Biomass Energy and Materials, Jiangsu Province, Nanjing, China; [3] Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology [Shandong Academy of Sciences], Jinan, China

年份：2022

卷号：139

期号：43

外文期刊名：Journal of Applied Polymer Science

收录：EI(收录号：20223512673729);Scopus(收录号：2-s2.0-85136901444)

基金：Postgraduate Research & Practice Innovation Program of Jiangsu Province, Grant/Award Number: KYCX21_0884; The Foundation of Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education of China, Grant/Award Number: KF202001 Funding information

语种：英文

外文关键词：Biopolymers - Crystallinity - Extrusion - Lignin - Milling (machining) - Nanofibers - Physicochemical properties - Screws - Straw - Wood

摘要：Wheat straw (WS) was considered the most abundant agricultural residue in China. Therefore, it was meaningful to explore the effective utilization of WS. Thus far, WS has been considered a potential raw material to produce lignocellulose nanofibrils (LCNFs) with the rapid development of nanotechnology. Unfortunately, the existing methods of LCNFs preparation directly from WS still faced some hurdles. Herein, screw extrusion and ball milling considered the common mechanical pretreatments were employed to directly prepare LCNFs from WS. The different impacts of screw extrusion and ball milling pretreatments on the properties of LCNFs were revealed by systematically comparing physicochemical analyses. The results showed that the crystalline and chemical structure of samples was little affected by the mechanical pretreatment. However, the mechanical pretreatment caused a change in the morphology, yield, and chemical composition of LCNFs. LCNFs prepared by screw extrusion with a high yield of 73% had the narrowest diameter distribution (0 ~ 80 nm), the most cellulose content (51.1%), and the maximum crystallinity degree (44.7%). LCNF samples all exhibited good thermal stability. This work could not only offer theoretical guidance on the preparation of LCNFs by mechanical pretreatments but also expand the high-value application of WS in polymer composites. ? 2022 Wiley Periodicals LLC.