Low bath ratio mordant dyeing process of Gardenia Blue pigment on silk fabric
In order to improve the dyeing performance of Gardenia Blue pigment on silk fabrics,using alum as a mordant and ultrasound assisted dyeing,the effects of mordant method,mordant dosage,dyeing temperature,dyeing time and bath ratio on dyeing performance were explored.The optimal dyeing process was obtained through single factor experi-ments and response surface optimization experiments:pre-mordant dyeing,the dosage of mordant 4%,dyeing temperature 50℃,dyeing time 30 min,bath ratio 1∶20.The color fastness to rubbing,water and perspiration of dyed fabrics under the optimal dyeing conditions were tested.Except for the color fastness to water was 3~4 level,the color fastness to perspira-tion was 4~5 level,the rest of the color fastness reached 4 level.
Gardenia Blue pigmentsilk fabricmordant dyeingultrasound assistance