Optimizing Dyeing Parameters of Remazol Golden Yellow G Dye upon Cotton Fabric

Herein, the effects of dyeing parameters such as temperature, concentration of salt, concentration of alkali, and duration of dyeing time of Remazol golden yellow G reactive dye upon cotton fabric were studied. It was found that implementation of the optimized parameters increased the percentage of dye exhaustion (%E) by 12.29% compared to conventional dyeing method. The effect of poor quality of water on the dye-fiber fixation was also assessed. It was found that the percentage of dye exhaustion decreased by 7.4% when untreated water was applied for the dyeing bath solution preparation. UV-Vis spectrophotometer was used for dye exhaustion measurements. It is demonstrated that the %E increased from 58.26% (using conventional reaction parameters) to 70.91% by combining optimized dyeing parameters (temperature of 60 oc, 50 g/L of NaCl, 10 g/L of NaOH, and 80 minutes of dyeing time). Wash fastness measurements were also carried out using Launder-o-meter. A constant liquor ratio of 1: 50 and depth of shade 5% were used throughout this study.