Abstract:

Cellulose is the most abundant natural, renewable and biodegradable polymer in the world, and has a wide range of applications in chemical, material and other fields. This paper mainly summarizes the research progress of cellulose-based hydrogels in recent years. First, the research background of cellulose-based hydrogels is introduced. Secondly, the cross-linking methods of cellulose water-based gels are listed, which are mainly composed of physical cross-linking and chemical cross-linking. Among them, physical crosslinking includes hydrogen bond crosslinking, hydrophobic crosslinking, ionic crosslinking, etc., while chemical crosslinking includes esterification crosslinking, Michael addition, free radical copolymerization, dynamic covalent bond crosslinking, etc. Finally, the applications of cellulose-based hydrogels in the fields of degradability, biomedical properties, hydrophilicity, adsorption, and electrical conductivity are highlighted. In addition, the development of cellulose-based hydrogel materials in terms of high mechanical properties and industrialized preparation is prospected.

Key words: cellulose, hydrogel, physical crosslinking, chemical crosslinking, functionalization

摘要：

纤维素是世界上最丰富的天然、可再生以及可生物降解的高分子材料，在化工、材料等领域有广泛的应用。本文主要对近几年来纤维素基水凝胶的研究进展进行了归纳总结。首先，介绍了纤维素基水凝胶的研究背景。其次，列举了纤维素水基凝胶的交联方法，主要有物理交联与化学交联。其中物理交联有氢键交联、疏水性交联、离子交联等，化学交联则是酯化交联、迈克尔加成、自由基共聚合、动态共价键交联等。最后，重点介绍了纤维素基水凝胶在可降解性、生物医学性、亲水性、吸附性、导电性等领域方面的应用。此外，对于纤维素基水凝胶材料在高机械性和产业化制备等方面的发展进行了展望。

关键词: 纤维素, 水凝胶, 物理交联, 化学交联, 功能化