Textile Dyeing with Natural Dye from Sappan Tree (Caesalpinia sappan Linn.) Extract
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چکیده
Natural dye extracted from Caesalpinia sappan Linn. was applied to a cotton fabric and silk yarn by dyeing process. The dyestuff component of Caesalpinia sappan Linn. was extracted using water and ethanol. Analytical studies such as UV–VIS spectrophotometry and gravimetric analysis were performed on the extracts. Brazilein, the major dyestuff component of Caesalpinia sappan Linn. was confirmed in both aqueous and ethanolic extracts by UV–VIS spectrum. The color of each dyed material was investigated in terms of the CIELAB (L*, a* and b*) and K/S values. Cotton fabric dyed without mordant had a shade of reddish-brown, while those post-mordanted with aluminum potassium sulfate, ferrous sulfate and copper sulfate produced a variety of wine red to dark purple color shades. Cotton fabric and silk yarn dyeing was studied using aluminum potassium sulfate as a mordant. The observed color strength was enhanced with increase in mordant concentration. Keywords—Natural dyes, Plant materials, Dyeing, Mordant.
منابع مشابه
Caesalpinia sappan A medicinal and dye yielding plant
Natural products have provided a variety of lead structures, which serve as templates for the development of new drugs. The water kept in Caesalpinia sappan Linn. (Sappan lignum) heartwood is being used in Kerala as herbal drinking water for its antithirst, blood purifying, antidiabetic, improvement of complexion and several other properties. The plant is also being used worldwide for a large n...
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