木质素低共熔溶剂分离、功能材料制备及应用研究进展

doi:10.12052/gdutxb.210124

摘要/Abstract

摘要： 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的研究热点。在此基础上, 保留木质素分子结构中活性基团, 如芳香基、酚羟基、醇羟基、羰基共轭双键, 以提高其反应活性, 制备高附加值功能材料, 有望在电子、储能、绿色包装等新兴领域推动产业化应用。本文以课题组的研究成果为基础, 综述了常见的DES种类、工艺优化与分离木质素的性质、木质素功能材料的制备, 以及木质素酚醛树脂、缓释肥及可降解材料的应用, 以期为木质素进一步开发利用提供一定的参考。

关键词: 木质素分离, 低共熔溶剂, 功能材料制备, 超级电容器, 酚醛树脂

Abstract: 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.

Key words: lignin fractionation, deep eutectic solvent (DES), functional materials preparation, supercapacitor, phenolic resin

中图分类号:

TQ351

罗朝兵, 李海潮, 游婷婷, 许凤. 木质素低共熔溶剂分离、功能材料制备及应用研究进展[J]. 广东工业大学学报, 2022, 39(01): 1-13.

Luo Chao-bing, Li Hai-chao, You Ting-ting, Xu Feng. Progress on Lignin Deep Eutectic Solvent Fractionation, Functional Materials Preparation and Industrial Application[J]. Journal of Guangdong University of Technology, 2022, 39(01): 1-13.

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