文献类型：期刊文献

英文题名：Upgrading wood biorefinery: An integration strategy for sugar production and reactive lignin preparation

作者：Wang, Kai[1] Gao, Shishuai[1,2] Lai, Chenhuan[1] Xie, Yitong[2] Sun, Yu[3] Wang, Jifu[1,2] Wang, Chunpeng[1,2] Yong, Qiang[1] Chu, Fuxiang[1,2] Zhang, Daihui[1,2]

第一作者：Wang, Kai

通信作者：Lai, CH[1];Zhang, DH[1]

机构：[1]Nanjing Forestry Univ, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, Coll Chem Engn, Nanjing 210037, Jiangsu, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Natl Engn Lab Biomass Chem Utilizat,Key Lab Bioma, Key Lab Chem Engn Forest Prod,Natl Forestry & Gra, Nanjing 210042, Jiangsu, Peoples R China;[3]Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Mollisols Agroecol, Changchun 130102, Jilin, Peoples R China

年份：2022

卷号：187

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20223012416309);Scopus(收录号：2-s2.0-85134722570);WOS:【SCI-EXPANDED(收录号:WOS:000877791500060)】；

基金：We acknowledge the support from the National Natural Science Foundation for Youth (32001283), National Natural Science Foundation of China (31971606) and the Natural Science Foundation of Jiangsu Province (BK20190091).

语种：英文

外文关键词：Biorefinery; Enzymatic hydrolysis; Lignin; Controlled radical polymerization; Self-healing adhesive

摘要：Lignin has been extensively explored as a renewable precursor for materials fabrication. However, its low reactivity is one of the main challenges for material development. Herein, we presented a simple and effective biorefinery strategy to directly prepare reactive lignin with lower molecular weight and enhanced reactivity for the fabrication of high-strength self-healing adhesives. The role of 2-naphthol to suppress lignin condensation during the organosolv pretreatment of two woody biomasses was demonstrated by the less condensed structures and decreased molecular weights of lignin. This promoted the enzymatic hydrolysis of pretreated poplar from 50.2% to 62.9% at the low enzyme loading. Furthermore, the resultant lignins showed 51.7% increase in the modification efficiency during an esterification reaction. Lignin based macro-initiator was used to initiate "grafting from" reversible addition-fragmentation chain transfer polymerization of furan methacrylate and lauryl methacrylate to generate copolymers with tunable properties. Then, the occurrence of reversible Diels-Alder reaction between furan rings and maleimide crosslinker enabled the formation of dynamic network as self-healing adhesive. The adhesiveness analysis revealed that the highest adhesive shear strength reached 6.3 MPa, which was significantly higher than most of previous adhesives used on wood chips. Furthermore, after 10 times self-healing, the shear strength still accomplished 39.6% of original strength. This study has presented an upgraded biorefinery strategy to tune the properties of lignin and its interesting utilization to fabricate functional materials, providing new insights into materials and biorefinery society.