1. Introduction
Rheum emodi, also known as Indian rhubarb and commonly known as 'Dolu'is a member of genus of perennial stout herbs distributed in the temperate andsub-tropical regions of the world, chiefly in Asia and originated in Mongolia.It is cultivated since long time in Europe and also acclimatised in Germany. The root of such plant finds application as astringent and purgative. The root ofsuch plant also gives yellow colour in aqueous medium and the root contains anumber of anthraquinone derivatives based on emodin, chrysophanol, aloe-emodinand rhein. The main colouring component of the root of Rheum emodi ischrysophanic acid, when extracted found to be associated with the abovecompounds. Such roots of Rheum emodi have been reported to dye wool andsilk fibres. Thepresent study is aimed at applying the colouring component of Rheum emodion nylon substrate for establishing an optimum conditions of dyeing (like dyebath pH, temperature of dyeing, concentration of dye bath) and assessing differentcolourfastness properties.
About the Authors
The authorsare associated with Visva Bharati University, Department of Silpa Sadana(Textile Section), Sriniketan.
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