Extraction of eco-friendly natural dyes from mango leaves and their application on silk fabric

Abstract

The aim of the study was to evaluate the performance of dyes extracted from mango leaves in silk dyeing. Extraction medium was optimized by extracting dyes from fixed quantity of crushed leaves under pH values from 3 to 12. The maximum relative color strength of the extracted dye liquor was found to be at pH 10. The optimum dye extraction conditions i.e., the temperature, time, and material-to-liquor ratio were found to be 98°C, 60 min, and 1:10, respectively. Dyeing was carried out with the optimized dye extract on mordanted and unmordanted silk fabrics. The dyed materials were evaluated by measuring the color yield and fastness properties. It was concluded that the color values were found to be influenced by the addition of mordants, consequently different fashion hues were obtained from the same dye extract using different mordants. It can also be said that mango leaves have good potentiality for dyeing of silk fabric.

Ecological dyeing of Woolen yarn with Adhatoda vasica natural dye in the presence of biomordants as an alternative copartner to metal mordants

“…Ferrous sulfate mordanted woolen yarn has displayed higher color strength as compared to alum and stannous chloride mordanted samples [56]. The activity sequence of metal salts in terms of color strength values was found to be ferrous sulphate (8.81) > stannous chloride (7.85) > alum (4.10) > control (4.01) dyed samples.…”

Ecological risk assessment and health safety speculation during color fastness properties enhancement of natural dyed cotton through metallic mordants

“…Alum mordanted specimens were exhibited higher L*, as it block dye molecules by bonding with more dye than that of the fiber molecule. The alteration of yellowness and redness had followed same fashion (Uddin 2015;Ali 2008). …”

“…Such firm binding promote dye uptake accordingly. Iron exhibited stronger fabric-mordants-dye interaction than copper (Uddin 2015;Ali 2008). Thus, all mordanted samples were exhibited better color fastness properties.…”

Extraction of Carotenoid Colorants from Tagetes erecta (Marigold) Flowers and Application on Textile Substrate for Coloration

“…Metal mordants (alum, iron and tin) individually or in combinations affected the color strength appreciably with the effect of dye concentration [16]. Iron salts increased the color strength values quite high owing to strong binding affinity towards dye molecules and wool fibers via coordination complexation and thus produced deeper shades on fiber [3,17]. Alum mordant, having low tendency for complexation, decreased the color strength and lighter shades are obtained.…”