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 and
sub-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 of
such plant also gives yellow colour in aqueous medium and the root contains a
number of anthraquinone derivatives based on emodin, chrysophanol, aloe-emodin
and rhein. The main colouring component of the root of Rheum emodi is
chrysophanic acid, when extracted found to be associated with the above
compounds. Such roots of Rheum emodi have been reported to dye wool and
silk fibres. The
present study is aimed at applying the colouring component of Rheum emodi
on nylon substrate for establishing an optimum conditions of dyeing (like dye
bath pH, temperature of dyeing, concentration of dye bath) and assessing different
colourfastness properties.
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About the Authors
The authors
are associated with Visva Bharati University, Department of Silpa Sadana
(Textile Section), Sriniketan.
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