Abstract:

Lignin is the second largest component of lignocellulosic biomass. The conversion of lignin with high efficiency and low cost is a key technology in commercial utilization of lignocellulosic biomass conversion. The utilization of lignin to replace part of polyols in polyurethane synthesis follows two main approaches：including direct utilization of lignin without any preliminary chemical modification and utilization of lignin with chemical modification. Direct utilization of lignin without chemical modification includes alkali lignin，lignosulfonate，kraft lignin and organosolvent lignin. Chemical modification includes hydroxylation modified lignin and nitration modified lignin. The problem as well as the development direction of lignin-based polyurethane materials are presented.

摘要：

木质素是木质纤维类生物质的第二大组分，木质素的高效、低成本转化是木质纤维素类生物质转化工艺实用化的技术关键。本文综述了利用木质素代替部分多元醇制备聚氨酯材料的两种主要途径：直接添加与改性添加。直接添加木质素包括碱木质素、木质素磺酸盐、硫酸盐木质素、溶剂型木质素等；改性添加木质素包括羟基化改性木质素、木质素硝化反应。最后指出了木质素基聚氨酯材料存在的不足和今后的发展方向。