Eco-Friendly Extraction and Utilization of Agro Crop Wastes Based Natural Dye for Textile Dyeing

Abstract

The incorporation of waste plant residues into practical applications, particularly as a sustainable source of green dyes in textiles, is increasingly recommended by the global community. This research investigates the potential of Rangoon creeper flowers and madder roots for silk dyeing through environmentally friendly methodologies. Therefore, extraction procedures were conducted in suitable mediums and applied to the fabric before and after microwave (MW) treatment for durations of up to 10 min. Similarly, response surface methodology was employed to assess the significance of various dyeing parameters, which influence shade development and enhance colorfastness. The results indicate that subjecting acidic binary extracts of Rangoon creeper flowers and madder roots, along with silk fabric, to 6 min of radiation at 700 W is an effective condition for achieving colorfast shades, particularly when applied before and after mordanting with Al, Fe salts, and tannic acid single and their binary solution as eco-chemical agents. The highest color strength (K/S = 15.0) was obtained using an acidic extract after MW treatment. Hence, evaluation based on standard methods such as ISO protocols for lightfastness, wash fastness, and rub fastness demonstrates that employing selected shades produced under environmentally friendly conditions is both time and energy-efficient, yielding stable colorfast hues rated from good to excellent. This study suggests that utilizing microwave treatment in addition to statistical methodologies like the central composite design for exploring novel dye-yielding plants, coupled with eco-mordanting techniques, holds promise for obtaining desirable colorfast shades.