木质素低共熔溶剂分离、功能材料制备及应用研究进展

木质素化学结构及分子组成复杂,工业生产中难以实现高效清洁分离.传统的制浆或预处理过程得到的木质素一般会发生降解或缩合,且纯度低,限制了其后续高值化利用.因此,开发新型、绿色的木质素分离技术尤为重要.低共熔溶剂(Deep Eutectic Solvent,DES)分离法作为一种新型绿色木质素分离技术,是当前生物质精炼领域...

Progress on Lignin Deep Eutectic Solvent Fractionation,Functional Materials Preparation and Industrial Application

The structure and molecular composition complexity of lignin make it difficult to be extracted from the biomass. In addition, the traditional fractionation methods usually lead to degradation and condensation of lignin with low purity, which hinders its valorization. Therefore, it is urgent to develop a new and environmentally friendly method for lignin fractionation. As a promising and green solvent for lignin fractionation, deep eutectic solvent (DES) has been a hotspot in the fields of biorefinery and accumulated many excellent achievements. Many active groups, including aryl, phenolic hydroxyl, alcohol hydroxyl and carbon based conjugate double bond, exist in molecular structure of lignin, leading to high activity for preparation of some functional materials, which has a strong industrial application prospect. Based on the our latest researches, the latest research progress in lignin fractionation by DES, the preparation of lignin-based functional materials and the application of lignin phenolic resin, lignin-based slow/controlled release fertilizer and lignin-based biodegradable material are concluded in the study.