UV protection and color constants of cotton fabrics dyed with natural dyes

Abstract

 In this research, cotton fabrics were dyed with various dye solutions obtained from natural materials, including turmeric, hibiscus and spinach, as well as mixtures of them. Pre-mordanting was applied using three metal salts. After the dyeing process, color constants were determined using the imageJ program, and the UVB/UVA transmission ratio for the dyed fabrics was measured. The results show that fabrics dyed with natural dyes, as well as those dyed with mixtures of natural dyes and different mordants, produced a variety of colors; additionally, the UV transmission values were found to be different and lower than those of the undyed fabrics.