Abstract
Demand for exploitation of natural dyes keeps increasing due to geometric increase in awareness on the health and environmental hazards linked to synthetic dyes. This study investigated coloring potential of mangiferin yellow dye from mango leaves (MLs) for cotton fabric. The mangiferin was obtained from MLs through microwave (MW)-assisted aqueous extraction technique. Dyeing of MW-irradiated (ICF) and un-irradiated cotton fabric (UCF) were optimized and eco-friendly mordants (5% o.w.f.) were exploited to achieve desired goal. The optimum conditions for dyeing cotton fabric were pH 5, 8 g/100 mL initial dye concentration, 50 min contact time and temperature of 60 °C. The color strength (K/S) of chemical and herbal mordanted ICF was 25.87–27.42% and 28.80–93.29% respectively higher than that of un-mordanted ICF. Post-mordanting was confirmed to be the best mordanting technique with development of varieties of beautiful shades (yellow to chocolate) of excellent fastness properties. This research established mangiferin as eco-friendly and sustainable alternative for dyeing textile substrates.
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