林业工程学报2025，Vol.10Issue(5)：1-13,13.DOI:10.13360/j.issn.2096-1359.202504003
工业木质素活化改性及其在甲醛系共缩聚胶黏剂合成中的应用研究进展
Advances in the modification of industrial lignin and its application in the synthesis of formaldehyde-based co-condensed adhesives
摘要
Abstract
Currently,traditional formaldehyde-based adhesives dominate the adhesive market in the wood-based panel industry.However,with the rapid transformation and upgrading of the wood-based panel industry,coupled with the strong push toward a green economy,these adhesives are increasingly falling short of meeting the industry's growing demand for high-performance and environmentally friendly alternatives.Although formaldehyde-based adhesives offer dual advantages in terms of cost-effectiveness and performance,and are unlikely to be completely replaced by alternative wood adhesives in the near future,actively exploring strategies for their improvement remains both practical and highly significant.This is essential for mitigating the environmental pressure faced by wood-based board enterprises,decreasing production costs to a certain extent and strengthening market competitiveness.Lignin,as the most abundant natural high molecular aromatic substance,possesses a distinctive chemical structure and numerous reactive functional groups,such as phenolic hydroxyl groups,aliphatic hydroxyl groups,and ortho positions of phenolic hydroxyl groups,which makes lignin an ideal candidate for modifying traditional formaldehyde-based adhesives.During the synthesis of formaldehyde-based adhesives,incorporating lignin as a modifier or reactive raw material not only improves the water resistance of the cured adhesive layer and reduces formaldehyde emission from the board,but also decreases chemical consumption and effectively manages the production cost of the adhesive.Nonetheless,commercially available industrial lignin often faces significant challenges,such as a limited number of active sites,low reactivity,and poor compatibility.These limitations substantially hinder its widespread application in industrial processes.To address these limitations,researchers have concentrated on the activation and modification of industrial lignin.They aim to increase the number of active sites or introduce new ones by chemically altering their molecular structure and to convert macromolecular lignin into oligomers or monomers with enhanced reactivity through depolymerization.The common methods,reaction mechanisms,and product structures associated with lignin activation and modification are systematically reviewed,to provide an in-depth analysis of the advantages and limitations of these approaches.Additionally,the research progress regarding the application of industrial lignin in the synthesis of formaldehyde-based wood adhesives is elaborated,the existing research findings are summarized and critically analyzed.Despite significant progress in enhancing traditional formaldehyde-based resin adhesives using industrial lignin,several challenges remain to be addressed before large-scale industrial application can be realized.In response to these challenges,this review presented some forward-looking insights into the key research directions for the future development of lignin-based formaldehyde adhesives in the concluding section.关键词
甲醛系胶黏剂/工业木质素/活化改性/胶黏剂合成/共缩聚Key words
formaldehyde-based adhesives/industrial lignin/activation modification/adhesive synthesis/copolymerization分类
通用工业技术引用本文复制引用
沈安,马玉青,杨培,周晓燕..工业木质素活化改性及其在甲醛系共缩聚胶黏剂合成中的应用研究进展[J].林业工程学报,2025,10(5):1-13,13.基金项目
国家自然科学基金(32271784,32101460). （32271784,32101460）
