This research work intended on evaluating dyeing performance and fastness properties on mulberry filament silk fabric dyed with the extraction of Azadirachta indica leaves. The absorbance of extracted dye solution was examined by UV/VIS spectrophotometer. In this research work, the samples were dyed by exhaust method and shades were developed by the simultaneous mordanting process using synthetic and natural mordants at 80 oC temperature maintaining 1:60 liquor ratio. Colorimetric analysis of dyed samples was done using CMC color difference and tolerance system under three illuminates ie. D65, TL83, and F11. Different colorfastness tests i.e. colorfastness to wash, water, perspiration, light, and rubbing were done for evaluating color change and color staining of dyed samples. The colorometric test results revealed that in most cases, samples dyed using synthetic mordants individually intensified the color of unmordanted samples and exhibited quite altered hue against unmordanted sample and also exhibited better color strength and improved color yield compared to natural mordanted samples. The fastness results were better for natural mordant in few cases.

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