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The effect of different mordants on natural dyeing of cotton, viscose and lyocell fabrics with pomegranate bark extracts


Journal of Textile Engineering & Fashion Technology
E Dilara Koçak,1 Pelin Altay,1 Özlem Tektas Çelikkanat,2 Tugba Ofluoglu2

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Abstract

Considering the growing environmental awareness, natural dyeing is considered as a sustainable approach in textile dyeing, which can minimize the environmental impacts of synthetic dyes. In this study, it was aimed to compare the dyeing properties of different cellulose-based fabrics (100% cotton, 100 % viscose, 100% Tencel) with pomegranate bark extract as a natural dye by using two different mordants (potassium aluminium sulfate and iron (II) sulfate). Results revealed that potassium aluminium sulfate and iron (II) sulfate gave different color shades from light to medium yellowish-brownish shades with different color depth (K/S) and color vividness (chroma). Alum mordant resulted in lighter, more greenish and more yellowish shades with more vivid color than iron (II) sulfate. The maximum K/S of 3.5 was achieved with viscose fabric mordanted with iron (II) sulfate. All dyed samples had increased tensile and tear strength compared to the raw fabrics, with satisfied color fastness values.

Keywords

natural dyeing, cellulose-based fibers, pomegranate bark extract, potassium aluminium sulfate, iron (II) sulfate

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