Silk dyeing with coffee sludge extracts using pomegranate peel extract as a mordant

In the research, knitted silk fabric was dyed with coffee sludge extracts using pomegranate peel extracts as a mordant. The influence of dyeing methods with mordants on color strength, i.e. pre-mordanting, meta-mordanting, and post mordanting was determined. Moreover, the light and wash fastness of fabric treated with samples were measured compared with untreated samples. The results showed that all dyed fabrics gave the same shade of color (a yellowish brown). However, concentration of mordants and mordanting method affected to depth of shade. Wash-fastness of fabric treated with mordants showed higher scale than those of untreated fabric, while light fastness was not significantly changed.