基于木质素分子结构特性的功能材料研究进展

Research progress of lignin functional materials based on its structural properties

  • 摘要: 木质素是自然界中储量最大的可再生芳香生物质资源,其大分子是由苯丙烷结构单元(愈创木基、紫丁香基和对羟基苯基)通过醚键和碳-碳键连接聚合而成,具有天然的生物活性、亲疏水性、纳米尺度的可调节性、分子结构设计的灵活性以及生物相容性等特点。围绕木质素的分子结构特性,重点综述了近年来国内外在木质素功能材料方面的研究成果与进展。首先从木质素化学组成和分布等角度探讨了木质素的分子结构特性;然后从基于原生木质素结构特点的直接功能应用、基于木质素分子结构调控的材料创制和应用以及基于木质素碳材料的开发和应用三个方面出发,系统讨论了木质素功能材料的研究现状和亟需突破的瓶颈;最后,简述了木质素在其他领域的应用进展,并展望了木质素功能应用工作中的重点以及未来的发展方向。

     

    Abstract: Lignin is the most abundant renewable aromatic resource in nature, its macromolecular structure is composed of three phenylpropane units (guaiacyl, syringyl and p-hydroxyphenyl) that connected mainly by ether and carbon-carbon bonds, featuring natural biological activities, hydrophilcity and hydrophobicity, nano-scale adjustability, flexibility in structural modification and biocompatibility. Recent progress on functional materials of lignin is critically discussed based on its structural properties. Firstly, the chemical composition and distribution of lignin in plant cell walls are summarized to elucidating its structural characteristics. Subsequently, recent achievements and challenges on advanced materials based on direct functional application, structural modification, and carbonization are discussed. Finally, the recent progress of lignin used in other fields is briefly summarized, meanwhile, the main points towards future developments and directions in advanced materials of lignin are also highlighted.

     

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