Dyeing performance of blueberry leaf pigment on tussah silk
In order to explore the application effect of blueberry leaf pigment in textile dyeing,the natural pigment was extracted from blueberry leaves,and its application performance in the dyeing of tussah silk fabric was investigated.The results proved that blueberry leaf pigment could be used as a natural dye for tussah silk,and the suitable parameters of direct dyeing were a bath ratio of 1∶50,pH value of 3.5,and 98 ℃ for 80 min.Furthermore,the pre-mordant and post-mordant with aluminum sulfate,zinc sulfate,and ferrous sulfate effectively enhanced the color depth of the silk fabric,among which the K/S value of ferrous sulfate was the highest.In addition,the color fastness test results show that the rubbing,washing and light fastness of directly dyed tussah silk fabric was grade 3,and the color fastness of the mordant dyed tussah silk fabric was more than grade 3-4.