Development of Lower M: L in Dyeing Cotton Fabric With Reactive Dye

Abstract

Synthetic dyes are most popular dyes. It produces excellent shade. In this experiment I choose 100% cotton fabric, can be dyed using reactive dyes which can be extract from synthetic polymer substance. Reactive dye, a chromophore an atom or group that determines the color of a compound in a reactive dye has a substituent that interacts with the substrate. Because of the covalent bonding that takes place throughout the dyeing process, reactive dyes have good fastness qualities. During dyeing process have to maintain proper pH (10-12.5), time, temperature (60⁰c). Shade match is most important we match the shade by the using spectrophotometer. Liquor ratio means volume of liquor to be taken in dye bath in proportion to weight of textile. Liquor ratio the term is very important. Because chemicals, dyes and water are directly involved with liquor ratio. The cost of production will be increase and decrease depends on the liquor ratio. Finally, we can say lower liquor ratio decrease the cost of production. Good fastness properties is define good product quality. Lower liquor ratio does not impact in fastness properties. Color fastness is the resistance of a material to change in any of its color characteristics.