فهرست نشریات علمی دسترسی آزاد ایران

Pollution from synthetic dyes and metallic mordants used in the dyeing industry is a significant environmental problem that poses risks to human, animal, and ecosystem health. This study investigates the dyeing of wool yarn using clove bud extract as a natural colorant and various bio-mordants (pomegranate rind, myrobalan, date kernel, oak bark, and pinecone) as eco-friendly alternatives to metal mordants. Colorimetric properties, including L*, a*, b*, C*, h°, color strength, wash, and light fastness, were evaluated for samples dyed using the pre-mordanting, simultaneous, and post-mordanting methods. The results showed that bio-mordants, especially myrobalan, gave comparable color strength and better light fastness than metal mordants (alum). While copper sulfate led to darker shades, it resulted in lower brightness and a greenish-brown hue. Bio-mordants, on the other hand, gave the dyed yarns a more reddish-yellow hue. The post-mordanting method generally produced the highest color strength, while the simultaneous method produced the lowest. The findings suggest that bio-mordants offer a promising alternative to metal mordants for dyeing wool yarn with clove bud extract, providing a more sustainable and environmentally friendly approach to textile dyeing.