New dyestuff moieties are introduced in the textile industry to upgrade the quality and aesthetic properties of dyed fabric. To contribute to this research endeavor, the current project was conducted for the dyeing of cellulosic fabric via new hetero-functional reactive dyes R1 and R2 synthesized in our previous study. Optimization of different process variables (temperature, salt, and alkali concentration) and their interactive study for exhaust dyeing was explored and delineated based on a statistical tool response surface methodology. Results divulged that both dyes displayed maximum exhaustion and fixation at a temperature of 61.50°C on the cellulosic fabric. Reactive dye R1 exhibited 87.62 (±3) exhaustion and 82.85 (±3) fixation percentage at their optimum salt (29.07 g/L) and alkali (32.55 g/L) dosage while R2 displayed 81.50 (±3) exhaustion and 77.21 (±3) fixation at its optimized salt (32.55 g/L) and alkali concentrations (22.84 g/L). All process variables showed a positive and synergistic effect on the dyeing properties. Enhanced exhaustion and fixation percentage of R1 as compared to R2 may be accredited to greater planarity and less steric hindrance of R1. Both dyes presented superb color buildup showing good to excellent color fastness on cotton fabric. Future perspectives of the current study comprised the application and assessment of dyeing parameters of these new reactive dyes on polyester cotton (PC) fabric.

在纺织工业中引入了新的染料部分，以提高染色织物的质量和美学性能。为了促进这项研究工作，当前的项目是通过我们先前研究中合成的新型异功能活性染料R1和R2对纤维素织物进行染色。基于统计工具响应面方法，探索和描绘了不同工艺变量（温度，盐和碱浓度）的优化以及它们对排气染色的交互式研究。结果表明，在61.50°C的温度下，两种染料在纤维素织物上均显示出最大程度的耗竭和固着。活性染料R1在其最佳盐（29.07 g / L）和碱（32.55 g / L）剂量下显示出87.62（±3）耗竭和82.85（±3）固定百分比，而R2显示81。在其优化的盐（32.55 g / L）和碱浓度（22.84 g / L）时，消耗50（±3）并固定77.21（±3）。所有工艺变量均显示出对染色性能的正向和协同作用。与R2相比，R1的耗竭和固着百分比提高可能是因为R1具有更高的平面度和更少的空间位阻。两种染料均呈现出极佳的颜色集结，在棉织物上显示出良好至优异的色牢度。当前研究的未来前景包括在聚酯棉（PC）织物上应用和评估这些新型活性染料的染色参数。与R2相比，R1的耗竭和固着百分比提高可能是因为R1具有更高的平面度和更少的空间位阻。两种染料均呈现出极佳的颜色集结，在棉织物上显示出良好至优异的色牢度。当前研究的未来前景包括在聚酯棉（PC）织物上应用和评估这些新型活性染料的染色参数。与R2相比，R1的耗竭和固着百分比提高可能是因为R1具有更高的平面度和更少的空间位阻。两种染料均呈现出极佳的颜色集结，在棉织物上显示出良好至优异的色牢度。当前研究的未来前景包括在聚酯棉（PC）织物上应用和评估这些新型活性染料的染色参数。