One-bath one-dye class dyeing of polyester/cotton blend fabric with disperse dye after esterification of cotton fabric

Abstract

Most often, reactive and disperse dyes are utilized separately in two- bath two-step dyeing method to dye polyester-cotton blend fabric. The cost of this conventional dyeing method is very expensive; energy and chemical usage is also quite higher in addition to this, the dyeing cycle is complex as compared to one-bath two-step dyeing methods or single-bath single-step dyeing methods. The single-bath single-step dyeing procedure with a single type of dye class was studied in this research. Following surface treatment of cotton through esterification procedures, polyester-cotton blend fabric dyed in single-bath single-step dyeing processes with disperse dye was examined. The association between time and the percentage of esterification was investigated at room temperature. Varying dye concentrations and dyeing temperatures were utilized to dye surface-treated p/c blend fabric in an HTHP dyeing machine. The color strength of dyed material and their fastness properties and the Surface chemistry by using FTIR were evaluated. The influence of dye concentration and temperature on color strength was investigated. With a 15% esterifying agent concentration and a reaction period of 2.5 h, the optimum value for surface modification was obtained, yielding a percent esterification of 34.95. The optimal value was attained with a dye concentration above 1% at a temperature of 120 °C, according to the dyeing experiment results. The findings of this study revealed that when compared to conventional two-bath dyed fabric, one-step one-bath dyed modified polyester/cotton blend with Disperse dye fabric has good wash fastness, and color strength, and is environmentally friendly.

An Observation on Dyeing Techniques of Polyester/Cotton Blended Fabrics Using Various Dyes

“…Moreover, in contrast to the conventional dyeing process, dispersion dye dyeing demonstrated good durability capabilities for wet and dry rubbing. Additionally, this technique exhibited high levels of color intensity when utilizing the dispersion dye [14].…”

“…Additionally, they carried out the dyeing process for 60 minutes at 110, 120, and 130C. Following this, the colorant was washed and cleaned for 15 minutes at 60°C using a water-based solution of two grams of sodium per liter and two grams of sodium hydrosulfite [14].…”

“…For instance, a polyester/cotton blend can be treated with alkali and chitosan solutions of various concentrations to improve dyeing with reactive dye by a one-bath two-stage dyeing method [13]. Or it could be dyed using a single-bath, one-step method that uses disperse dye once the cotton is esterified, which demonstrated good wash resistance and color strength [14]. Also, a great deal of additional dyes was employed to successfully dye this fabric mixture.…”