羧基化石墨烯/壳聚糖复合皮革涂饰剂的制备与应用

arboxylated graphenewas prepared by carboxylation of graphene oxide with bromoacetic acid, and the structure of product was characterized by FT-IR. Then, the carboxylated graphene/chitosan composite leather finishing agent, with chitosan as matrix and carboxylated graphene powder as filler, was prepared by solution blending method. The results showed that the optimum preparation process was as follows: when the pH value was 3 and reaction at 30 C for 5h, the composites had the best dispersibility, with zeta potential of 60.8 mV and particle distribution coefficient of 0.179. The carboxylated graphene/chitosan composite finishing agent can significantly improve the physical mechanical properties of leather. The wear resistance can be increased to level 4, the dry/wet rub resistance can be increased to level 5 and level 4-5.