原子转移自由基聚合接枝改性木质素

Grafting Modification of Lignin via Atom Transfer Radical Polymerization

木质素是仅次于纤维素的第二大生物质资源,是自然界中唯一的可再生芳香族化合物资源。长久以来,木质素的难以充分利用是掣肘生物化工产业的一个重大问题。近年来,原子转移自由基聚合接枝改性成为木质素高值化利用的一个重要方法,可制备获得不同结构、性能各异的木质素接枝改性材料。本文从单体种类、催化剂、材料的结构与性能等方面,介绍了原子转移自由基聚合接枝改性木质素的研究进展,并对该领域的发展前景与挑战进行了探讨。

Lignin is the second most abundant biomass and the only natural source of aromatic hydrocarbons.The great challenge of the low-level utility of lignin remains for the biochemical industry.Recently,grafting modification of lignin via atom transfer radical polymerization(ATRP)has attracted much interest as an important improvement strategy for lignin.Varied kinds of lignin-based copolymers with different properties are synthesized via ATRP.This review summarizes the progress of grafting modification of lignin via ATRP,including the monomers,catalysts,copolymer structures and properties.Moreover,the outlook and challenges for lignin-based copolymers are discussed.