The carboxymethyl-chitosan was gained from chitosan through the way of chloroethanic acid;the characteristic of carboxymethyl-chitosan was measured.

• 以壳聚糖原料,采用氯乙酸途径制备方式,得到制备羧甲基壳聚糖最佳工艺路线,并对产物进行了性能测定,其取代度达到90%25以