针对姜黄天然染料对真丝织物直接染色表面色深度(K/S值)低、染色牢度差的问题,利用壳聚糖与TEMPO-NaO-Cl-NaBr氧化体系制备选择性氧化壳聚糖改性剂对丝织物进行改性.与未经改性的真丝织物相比,经氧化壳聚糖改性织物的姜黄上染率明显提高,且随着壳聚糖氧化程度增加,改性真丝织物的姜黄上染率呈上升趋势.以姜黄改性真丝织物的上染率为指标,确定氧化壳聚糖对真丝织物最佳整理工艺为:氧化壳聚糖质量分数1%,温度65℃,时间1.5 h,浴比1:50.经氧化壳聚糖改性的真丝织物具有良好的K/S值和染色牢度.%Aiming at problems of low color depth (K/S value) and poor color fastness of silk fabric directly dyed with natural dye turmeric, the modification agent of selective oxidized chitosan was prepared from chito-san and TEMPO- NaOCl- NaBr oxidation system and applied to modify silk fabric. Compared with untreated silk fabric, the dye- uptake of silk fabric dyed with turmeric was increased remarkably after treated with oxi-dized chitosan. And with increasing the oxidation degree of chitosan, the dye- uptake of the treated silk fabric dyed with turmeric increased constantly. Based on the dye- uptake of treated silk fabric dyed with turmeric, the optimum modification process of silk fabric treated with oxidized chitosan was determined: the mass frac-tion of oxidized chitosan 1%, reacted at 65 ℃ for 1.5 h, the liquor ratio 1:50. The silk fabric treated with oxi-dized chitosan had good K/S value and color fastness.
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