丙三醇交联壳聚糖/聚乙二醇/负离子皮革涂饰剂的制备与应用

he concentration of negative oxygen ion has been regarded as an important factor to characterize the air quality in ecological environment assessment. Herein, glycerol crosslinked chitosan/polyethylene glycol/negative oxygen ion composite was fabricated by solution mixing, followed by the preparation process optimized by orthogonal design. Then, the composite was applied to leather finishing and the negative oxygen ion generation and physical mechanical properties were investigated. The results showed when the content of glycerol was 0.50%, the content of anion material was 100%, and the ratio of chitosan to polyethylene glycol was set as 60:40, the zeta potential was increased to 68.4 mV and the particle size distribution coefficient was reduced to 0.237. Compared with the unmodified materials, the negative oxygen ion generation of leather coated by glycerol crosslinked chitosan/polyethylene glycol/ negative oxygen ion composite was increased to 2271 pcs/cm3, and the wear resistance of finished leather can be improved from grade 3 to grade 4. Additionally, the dry friction resistance can be improved from grade 3~4 to grade 5, and the wet rubbing resistance can be improved from grade 1~2 to grade 4.