磁性壳聚糖/聚多巴胺改性棉织物的天然花青素染色

Anthocyanin dyeing of cotton fabrics modified with magnetic chitosan/polydopamine

制备了磁性壳聚糖/聚多巴胺溶胶,并将其用于棉织物的表面改性。用葡萄籽来源的花青素天然染料对改性的棉织物染色,用全反射红外光谱与扫描电镜对改性棉纤维进行结构表征,并探讨了影响改性棉纤维吸附天然花青素染料的因素。结果表明,经过磁性壳聚糖/聚多巴胺改性的棉织物表面有高分子聚合物薄膜沉积,其织物表面比未处理棉织物粗糙,且抗紫外线效果增强,织物断裂强度提高。用天然染料花青素染色后的棉织物表面色深KZS值增加。当花青素质量浓度为5g/L,染色温度为60℃染色时间为70 min,在中性染色条件下,改性棉织物可获得较好的染色效果。

The magnetic chitosan/polydopamine hybrid sol is prepared and used to modify cotton fiber. The structure of the modified cotton is characterized with the ATR-IR and SEM. The effect of different dyeing conditions on dyeing properties of the treated cotton fiber with anthocyanin is discussed. The results show that the surface of the treated cotton fiber is more coarse than the untreated. The treated cotton has better anti-UV and mechanical properties. Under the conditions of anthocyanin concentration of 5 g/L, dyeing temperature 60 ℃, neutral condition, the treated cotton fiber can obtain high K/S value.