Ethiopian Dye plants As a Source of Natural Dyes for Cotton Dyeing
Journal Title: Universal Journal of Environmental Research and Technology - Year 2013, Vol 3, Issue 4
Abstract
The increasing demand for eco-friendly and sustainable dyes for textile coloration has prompted the revival of natural dyes particularly in Asian countries. However, in African country like Ethiopia though very rich in biodiversity, no scientific study has been made to identify natural dye yielding plants and explore the possibility of using natural dyes for coloration of natural fibers. Traditional natural dyeing experience is very limited and remains only in the hands of few craftsmen. In the present study an attempt has been made to identify 13 dye yielding plants from north- west and south- west regions of Ethiopia. The aqueous color extracts were used for the dyeing of un-mordanted and pre-mordanted cotton. The dyed samples were analyzed in terms of color yield (K/S), color difference (L* a* b*) and wash, rubbing and light fastness properties. As expected the cotton samples pre-mordanted with alum and ferrous sulphate showed increased depth of shade and improved wash and rub fastness compared to un-mordatned cotton. Though the wash and crock fastness results were commercially acceptable, light fastness was poor and there was a scope for its improvement. The study is of practical nature and of industrial importance. The chemical structure analysis of the color extracts is not within the scope of the present study.
Authors and Affiliations
Abera Kechi, R. B. Chavan, Reinhart Moeckel
Keywords
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