真丝绸的天然茶多酚染整加工

Wet processing of silk fabric with natural tea polyphenols

研究了茶多酚(TP-95)在真丝上的染色性能,分别采用媒染剂硫酸亚铁和硫酸铜同浴法与茶多酚络合,通过正交试验确定媒染剂用量、染色温度、染色时间和pH值的茶多酚染色优化工艺,对染色织物牢度等性能进行测试。结果表明,采用媒染剂能显著提高茶多酚的上染性能,硫酸亚铜的效果优于硫酸亚铁;在铜离子质量浓度为2 g/L、TP-95用量5%(omf)、pH值6.4和90℃条件下浸染90 min,可达到较高的K/S值;染色后真丝织物牢度性能优异,且具有良好的抗紫外效果。

Taking ferrous sulfate and copper sulfate as a mordant separately, the mordant dyeing of silk fabric with tea polyphe- nols （TP-95） in one bath is studied. The optimized process, including the amount of mordant, dyeing temperature, dyeing time and pH value, is determined by orthogonal experiment. The properties such as color fastnesses of the silk dyeings are al- so tested. The results show that both of the mordants can significantly improve the dyeing properties of the polyphenols, and the mordant cuprous sulfate is more helpful than ferrous sulfate. The dyeings can achieve high K/S value of 11.29, good color fastnesses and anti-UV property at the optimum conditions of copper ion 2 g/L, TP - 95 5 % （ omf）, pH value 6.4, dip dyeing at 90 ℃ for 90 min.