Effects of Different Mordanting Methods of Dye from Reseda Luteola Plants on Cotton, Viscose Rayon Knitted Fabrics Coloration

Abstract

Cotton and viscose fibers are the most common fibers that used in textile industry. They have also a crucial potential for sustainability. As environmentalist approaches have gained importance to endure sustainable fashion, textile products have started to be produced by sustainable processes like ecological dyeing methods. Considering this approach, natural dye is preferred by producers and consumers with an environmentally friendly approach as a dye that is frequently used in textile coloring such as cotton and viscose rayon products. In this study, Reseda Luteola plant, which grows in the Mediterranean region of Turkey, was used as a natural dye source. For this purpose, natural dye was extracted from the dried and ground leaves of the Reseda Luteola plant. 100% cotton, 100% viscose rayon and (50% -50%) blended cotton/viscose rayon knitted surfaces were used in the study. Prior to the dyeing process, copper sulfate, aluminum potassium sulfate and iron sulfate were used as mordant material and pre-mordanting method was used in applications. The color strength (K/S) and CIE Lab (L *, a *, b *, C *) values of the samples dyed with the different mordanting agents were analyzed and their effects on fastness properties were investigated. As a result, the color efficiency (K/S) and fastness properties of 100% cotton, 100% viscose rayon and (50% -50%) blended cotton/viscose rayon knitted fabrics colored with natural dye that is obtained from Reseda Luteola plant, were obtained by determining CIE Lab (*L, *a, *b and *C) values. It has been figures out that their fastnesses meet the coloring properties and high results are evaluated especially in light fastness values.