Green extraction and dyeing of silk from Beta vulgaris peel dye with ecofriendly acid mordants

Natural dye from Beta vulgaris (Beetroot) peel was extracted ultrasonically and used to dye silk fabrics with and without ecofriendly acid mordants. The mordants used were citric acid, tartaric acid acetic acid and tannic acid. Colour fastness properties of dyed fabrics with different parameters (colour fastness to washing, colour fastness to acidic and basic perspiration, colour fastness to light, colour fastness to dry and wet rubbing, colour fastness to water and sea water, colour fastness to heat, dry cleaning and acid and alkali spotting) were assessed with the help of grey scale. Beetroot peel dye was found to have good fastness properties on silk fabrics. Dyed silk fabrics were also subjected to colour measurement values, Tristimulus (XYZ), LAB values and Munsell renotations (Hue, Lightness and Chroma). Hue values showed that Beetroot dye has blue colour.