食用色素辣椒红对粘胶织物的媒染染色

为了替代合成色素并拓宽辣椒红色素在染整方面的应用,将食用色素辣椒红对粘胶纤维进行媒染染色,后经玉米醇溶蛋白固色,比较媒染剂种类及媒染方法对染色织物染色性能的影响,探讨媒染时间、温度、媒染剂用量和染液pH值对织物媒染染色性能的影响,使用玉米醇溶蛋白固色,比较固色前后织物色牢度。结果表明:以硫酸铝为媒染剂在同浴媒染下可以获得色泽较深的织物,较适宜的染色工艺条件为:媒染时间45 min,温度90℃,硫酸铝用量4.0%(owf),染液pH值4.0,染色织物具有一定的耐摩擦色牢度及皂洗沾色色牢度,但皂洗变色色牢度无法满足实际需求。经醇溶蛋白处理固色后,织物的皂洗变色色牢度提升3~4级,织物色相不受影响,织物其他性能也不受影响。

Mordant dyeing of viscose fiber by food pigment and fixing of alcohol soluble protein

In order to replace the synthetic pigment and broaden the application of capsicum red pigment in dyeing and finishing,the edible pigment capsanthin is mordantly dyed on viscose fibers, and then fixed by zein. The effects of mordant types and mordant dyeing methods on fabric dyeing properties were compared. The effects of mordant dyeing time, temperature, mordant dosage and pH value on fabric mordant dyeing properties were discussed, and the dyeing process was optimized. It compared the color fastness of fabrics before and after fixing with zein. The results showed that using aluminum sulfate as mordant in the same bath mordant dyeing could obtain deep color fabrics, and the optimal dyeing conditions were as follows: mordant dyeing time was about 45 min, temperature was 80 ℃, aluminum sulfate dosage was 4.0%(owf), and pH value was 4.0. The dyed fabric has deep color and certain rubbing fastness and soaping fastness, but the color change fastness cannot meet the actual demand. After zein treatment, the color of the fabric is not affected, and the soaping fastness of the fabric is improved by 3-4 grades.