Comparative Study on Dyeing Behavior of Different Shades of Reactive Dyes on Cotton Woven and Knit Fabrics

Abstract

The present study explores the dyeing behavior of cotton woven and knit fabrics using reactive dyes at 3 different percentages of shade: 0.5%, 1.5%, and 3.0%. Six samples were prepared by dyeing three woven and three knit fabric samples, using the same conditions. The research consists of a typology of critical parameters (fabric weight (GSM), wale per inch (WPI), course per inch (CPI), ends per inch (EPI), and picks per inch (PPI)) to investigate structural differences between woven and knit fabrics. Performance characteristics like continuous washing fastness, drapability, bursting strength and tensile strength were analyzed with respect to the dyeing behavior in terms of shade percentage and fabric construction. The results of dye uptake, fastness properties and mechanical performance were shown to have significant variation depending on fabric type and the shade depth. Knit fabrics were more flexible, but had a weaker burstingstrength and lower tensile strength, while woven fabrics had a higher dimensional stability and tearing resistance and a higher tensile strength. The results exhibited dyeing behavior of woven and knit cotton fabrics and discussed the effect of fabric structure and depth of shade on physical and mechanical properties. The results can be applied to engineer dyeing processes and fabric selection for optimal performance in various applications.