Abstract
ABSTRACT There is a growing literature investigating to use natural materials for dyeing textiles on account of their low toxicity, eco-friendliness, sustainability, and better biodegradability. In this way, this article presents the results of a study into the applications of tamarind hull and marzangoosh in a fully eco-friendly manner to dye cotton yarns. The effect of the main dyeing conditions (dye concentration, bath pH, time, and temperature) on the color efficiency (K/S) was investigated with a reflectance spectrophotometer. Results indicate that at optimized conditions, pre-mordanting yarns with tamarind hull as an eco-friendly mordant lead to the formation of an insoluble complex on cotton yarns followed by increased dye adsorption, which enhances the light and wash fastness properties. The SEM photographs showed that pre-mordanting cotton yarns with tamarind hull increase the surface porosity. Finally, based on our observations, it may be claimed that cotton yarns subjected to both pre-mordanting and dyeing exhibited a good antibacterial activity and the procedure proposed in this study seems to be of potential use for the production of medical textiles without adverse environmental impacts.
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