Evaluation of Colour Fastness Properties of Natural Dyes on Mulberry Silk

Author: Mavilashaw V.P.* and S.V. Krishnamoorthy

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Abstract

The colour fastness properties of mulberry silk yarn dyed with natural dyes extracted from root, rhizome, bark, flowers, seeds, fruits, of beet root, Beta vulgaris; turmeric, Curcuma longa; arjun tree, Terminalia arjuna; gulmohar, Delonix regia; annatto, Bixa orellana; mulberry, Morus indica respectively, and fungi Penicillium purpurogenum have been studied. Hot water extraction method was used to extract the dyes from the plant parts. Silk bleaching was done by oxidation process. Investigations were carried out at the Department of Sericulture, TNAU, Coimbatore. Natural dye has good scope in the commercial dyeing of mulberry silk in the garments industry. The dyed silk samples have shown good colour fastness properties in washing, perspiration (acid, alkali), light and rubbing (dry and wet). The dyed silk samples were evaluated for their colour fastness to washing, rubbing, light and perspiration at Arthanari Loom Centre (Textile) Pvt. Ltd., Salem using the methods prescribed by the I

Keywords

Natural dyeing of silk-plants and microbe- staining and colour fastness.

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