文献类型：期刊文献

英文题名：A systematic study of lignocellulose nanofibrils (LCNF) prepared from wheat straw by varied acid pretreatments

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

第一作者：Yan, Ming

通信作者：Zhou, XF[1];Lu, HL[2]

机构：[1]Nanjing Forestry Univ, Coll Light Ind & Food, Jiangsu Prov Key Lab Pulp & Paper Sci & Technol, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, Nanjing 210037, Peoples R China;[2]Qilu Univ Technol, Key Lab Pulp & Paper Sci & Technol, Minist Educ, Shandong Acad Sci, Jinan 250353, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Jiangsu Prov Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China

年份：2022

卷号：185

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20222312195350);Scopus(收录号：2-s2.0-85131223703);WOS:【SCI-EXPANDED(收录号:WOS:000877801700003)】；

基金：We are grateful for financial support from Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX21_0884) and the Foundation of Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education of China (NO. KF202001).

语种：英文

外文关键词：Wheat straw; Lignocellulose nanofibrils (LCNF); Organic acids; Inorganic acids; LCNF film

摘要：Due to the complex and recalcitrant structure of the cell wall, the current process of lignocellulose nanofibrils (LCNF) preparation directly from lignocellulosic biomass presents environmental pollution, large consumption of energy and chemicals, and low economic efficiency. In the previous research, we successfully prepared LCNF from wheat straw. However, the mechanism of different acids with small quantities in the pretreatment of lignocellulose during the preparation of LCNF is unrevealed. Herein, we select six organic and inorganic acids to pretreat wheat straw combined with glycerol swelling and mechanical action to directly prepare LCNF from wheat straw. The chemical, physical, mechanical, and thermal performances of LCNF are systematically investigated. Furthermore, the acidity of different reaction systems (glycerol and glycerol mixture containing varied acids) is evaluated to reveal the potential relationship between the performance of LCNF and varied acids with small quantities. The obtained H2SO4-LCNF film possesses good mechanical performances (the specific tensile stress of 78.4 KN m/kg and specific Young's modulus of 6.0 MN m/kg). Overall, we hope this work could offer theoretical guidance for the large-scale production of LCNF directly from lignocellulosic biomass by varied acid pretreatments.