文献类型：期刊文献

英文题名：A novel rosin-based non-isocyanate polyurethane with high-strength, self-healing, and recyclable properties for wood adhesives

作者：Zhou, Yuemin[1] Dong, Fuhao[3] Chen, Xingyu[1] Huang, Xujuan[2] Guo, Lizhen[3] Liu, He[3] Xu, Xu[1]

第一作者：Zhou, Yuemin

通信作者：Xu, X[1];Dong, FH[2]

机构：[1]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Jiangsu Prov Key Lab Chem & Utilizat Agroforest Bi, Int Innovat Ctr Forest Chem & Mat.Coll Chem Engn, Nanjing 210037, Jiangsu, Peoples R China;[2]Yancheng Inst Technol, Sch Chem & Chem, Yancheng 224000, Jiangsu, Peoples R China;[3]Chinese Acad Forestry, Key Lab Biomass Energy & Mat, Natl Engn Lab Biomass Chem Utilizat, Key & Open Lab Forest Chem Engn,State Forestry Adm, Nanjing 210042, Jiangsu, Peoples R China

年份：2024

卷号：211

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20240815609707);Scopus(收录号：2-s2.0-85185405379);WOS:【SCI-EXPANDED(收录号:WOS:001187969000001)】；

基金：This work was supported by Projects from the National Natural Science Foundation of China (32171722) and the National Natural Science Foundation of China (32071708). Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (ATPP), the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

语种：英文

外文关键词：Biomass; Rosin; Non-isocyanate polyurethane; Mechanical properties; Adhesives

摘要：Non-isocyanate polyurethane (NIPU) has received wide attention as a material prepared from renewable resources. Nevertheless, due to its poor mechanical properties, NIPU is difficult to replace conventional polyurethane to achieve large-scale production and practical applications. Hence, using rosin derivatives as raw materials, biogenic cyclic carbonic acid esters were synthesized by carbon dioxide (CO2) coupling reaction, and then cured with polyethylenimine (PEI) to form a new renewable NIPU thermosetting network without catalysts. The introduction of a rosin rigid structure and the formation of a hyperbranched structure make the obtained NIPU have excellent tensile strength (up to 40.50 MPa). Meanwhile, the hydrogenated phenanthrene ring structure of rosin restricts the movement of the NIPU chain, which leads to good thermal stability. Taking advantage of the transesterification of carbamates, the resultant NIPU exhibited self-healing, recyclability (recovery efficiency reached 89.50%), and shape memory. In addition, abundant polar groups endow NIPU with good adhesion strength. The innovative bio-based NIPU materials that are suggested in this work exhibit a variety of benefits, such as low curing temperature, outstanding mechanical properties, environment friendliness, and thermal stability, and have various applications in furniture and printing, adhesives, packaging materials, and other industries.