One-Bath One-Step Dyeing of Polyester/Cotton Blend Fabrics Through Lipase Enzyme Surface Modification

In this study, based on lipase enzyme surface modification, low-temperature dyeing of polyester/cotton fabric with reactive dyes was researched to achieve a one-bath one-step dyeing method. The Box-Behnken method was used to conduct the experiment and determine factors. For surface modification, lipase concentration, reaction time, and treatment temperature were considered, whereas for the dyeing process, reactive dye concentration, dyeing time, and dyeing temperature were taken into account to measure color strength. A treatment temperature of 30°C, a lipase enzyme concentration of 14 w/v %, and a treatment time of 50 min were shown to be ideal or optimum surface treatment parameters for lipase enzyme surface modification. The optimal or ideal conditions for the dyeing process were a reactive dye concentration of 2.13 w/v%, dyeing time of 50 min, and dyeing temperature of 66°C, giving a color strength value of 3.02. Lipase enzyme-modified polyester/cotton (p/c) blend fabrics provide color fastness that is all over grades 3–4, including washing fastness, rubbing fastness, perspiration fastness, and light fastness. The outcomes raise the prospect of developing a new technique for dying polyester/cotton blend fabric in a single bath using a single dye class that is typically employed for dying textiles made of cellulosic material.