Optimization of natural gardenia blue pigment dyeing process with low bath ratio by response surface methodology
To explore the application of natural gardenia blue in dyeing process,silk fabric was dyed with natural gardenia blue through direct dyeing method with the assistance of ultrasonic technology.Then,the optimal dyeing conditions were determined by single factor variable experiment and response surface method.The results show that the natural gardenia blue pigment exhibited the best dyeing effect on the silk fabric when the ultrasonic power was 120 W,the pH value was 3,the dyeing temperature was 50 ℃,the dyeing time was 50 min and the dyeing bath ratio was 1∶20.Satisfactorily,the color fastness to rubbing was good,and the color fastness to water and perspiration was measured as 4.Meanwhile,the staining fastness to cotton was 3,which met the standard of textile.At the same time,the optimized dyeing conditions were verified.The relative error between actual value and predicted value of the dyed silk fabric was 4.55％,and the reliability of the response surface prediction test was 95.45％.
natural gardenia blue pigmentsilk fabriclow bath ratio dyingultrasonic technologyresponse surface methodK/S value
万方数据
维普
