نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه فرش، دانشکده هنرهای صناعی، دانشگاه هنر شیراز، شیراز، ایران، کدپستی: 7146696989
2 گروه مهندسی نساجی و پوشاک، واحد قائمشهر، دانشگاه آزاد اسلامی، قائمشهر، ایران، صندوق پستی: 163
3 گروه شیمی، واحد قائمشهر، دانشگاه آزاد اسلامی، قائمشهر، ایران، صندوقپستی: 163
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This study investigates the potential application of Opuntia fruit extract as a natural dye for wool fibers in hand-woven carpets. Adopting a sustainable and eco-conscious textile dyeing approach, we systematically evaluated critical parameters including dye concentration (30-100 %), mordant concentration (0-10 %), temperature (30-
100 °C), duration (20-100 min), and pH (3-11) on color characteristics and fastness properties. The aqueous extraction method yielded betalain pigments, confirmed through spectroscopic analysis. Results demonstrated the capacity of Opuntia extract to produce a diverse color spectrum, ranging from red to brown. Optimal dyeing conditions were achieved at 80 °C for 90 minutes with pH 5.5±0.5. Metal mordants significantly influenced color fastness: iron mordant delivered superior wash fastness, while copper mordant enhanced light fastness. Statistical analysis (p<0.001) confirmed all process variables significantly affected colorimetric indices - including color strength (K/S), chroma (C*), hue angle (h°) - and fastness properties. Notably, temperature exerted a dominant influence on color purity, whereas mordants primarily governed hue stability and fastness. The optimized dyeing protocol maintained favorable mechanical properties of wool fibers while achieving excellent color characteristics. This research establishes Opuntia as a high-potential natural dye source capable of producing stable, vibrant hues. Its implementation offers an effective strategy for developing sustainable textile dyeing processes with reduced environmental impact.
کلیدواژهها [English]