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介绍了甲壳素及其衍生物的酰基化反应、产物的制备方法、酰化产物的性能及其用于生物医用材料上的最新进展。甲壳素及其衍生物的酰基化改性是一种很有价值的化学改性途径，不仅可改善酰化产物在有机溶剂中的溶解性或水溶性，，而且产物作为生物材料具有许多独特的用途。
The acylation reaction of chitin and its derivatives, the preparation method of the products, the properties of the acylated products and the latest progress of the biomedical materials were introduced. Acylation of chitin and its derivatives is a valuable chemical modification route not only to improve the solubility or water solubility of acylated products in organic solvents but also to have many unique use.