N-alkylated modification of the water-soluble low-molecular weight chitosan was made by phase transfer catalysis using cetyl trimethyl ammonium bromide in NaOH solution.

• 采用溴化十六烷基三甲基铵作相转移催化剂,在氢氧化钠水溶液进行低聚水溶性壳聚糖的N-烷基化修饰改性反应。