The coating agent was prepared by adding PU solution to the appropriate amount of chitosan solution while adjusting the viscosity and then applied to fabrics through transfer coating technique.

• 采用聚氨酯(PU)树脂溶液添加到适量的壳聚糖溶液中,同时调整粘度至所需涂布的粘度,经转移涂层工艺加工成PU涂层织物。