Work

Process Optimization and Fastness Performance of Rosederived Anthocyanin Dye on Natural and Synthetic Fibres

Year: 2026

Type: article

Abstract: Rose petal derived anthocyanin dye was applied to cotton, wool, silk, and polyester fibres using pre, meta, and postmordanting techniques with alum and potassium dichromate. Dye extraction was performed using an acidified solvent system and optimized through response surface methodology. The dyed fabrics were assessed for colour strength (K/S) and colour fastness to washing, rubbing, perspiration, light, and water according to ISO standards. The results revealed that mordant type, concentration, and mordanting technique significantly influenced dye uptake and fastness performance. Cotton exhibited superior fastness properties when postmordanted with 4.5% alum, while wool showed improved durability with potassium dichromate under premordanting conditions. Silk demonstrated the highest colour strength (K/S = 5.323) with 4.5% potassium dichromate using postmordanting. Polyester showed limited dye affinity. The findings indicate that rosederived anthocyanin dye can serve as a sustainable textile colorant when optimized mordantfibre interactions are employed.

Source: PLANT ARCHIVES

DOI: 10.51470/plantarchives.2026.v26.no.1.085