氧化纤维素的制备及应用

Preparation and Application of Oxidized Cellulose

纤维素是自然界存在最古老、来源最丰富的可再生资源,纤维素通过改性可大大提高其应用性能。构成纤维素的D-葡萄糖单元上C_(2)、C_(3)和C_(6)位羟基易通过氧化、酯化、醚化和接枝共聚反应等方法实现改性。其中,氧化纤维素具有生物可降解性、环境无污染性、无毒性等优点,逐渐成为纤维素领域的研究热点。通过对纤维素上不同位置的羟基进行氧化,可形成醛基、酮基、羧基等活性基团,用于进一步研究和应用。介绍氧化纤维素的氧化原理、制备方法以及应用领域。

Cellulose is the oldest and most abundant renewable resource found in nature,and its potential applications can be greatly enhanced through modification.Chemical modification of cellulose involves various reactions,such as oxidation,esterification,etherification,and graft copolymerization,occurring at the C_(2),C_(3),and C_(6)hydroxyl positions of the D-glucose units that form the cellulose backbone.Among these modifications,oxidized cellulose has drawn significant attention in the field of cellulose research due to its biodegradability,environmental friendliness,and non-toxicity.Introducing different functional groups,such as aldehydes,ketones,and carboxyls,through the oxidation of cellulose at specific positions,offers great potential for further investigation.■is review presents the principles,preparation methods,and applications of oxidized cellulose.