New Knowledge About Polyamide Filament Dyeing with Anionic Dye (original) (raw)

2019, Knowledge International Journal

The new knowledge through a concrete scientific study of the dyeing process of polyamide filament yarns (nylon yarn) with anionic dye in slightly acidic medium without any other additives (electrolyte, yeast, equalizer, etc.) in order to transfer the process in industrial conditions have investigated in this study. Generally, polyamide fibers (nylon, PA) have a different but similar chemical composition, depending on the base materials used for their synthesis. Anionic dye is usually used for dyeing cellulosic materials, but in special cases it can also be used for dyeing other textile raw materials. In this study, samples of polyamide filament yarn of linear density of 151 Nm have dyed with anionic dye at a temperature of 95 °C. Acetic acid was added in the dyeing solution to adjust the pH of the medium. The used dye is marked like C.I. Direct Red 1. The used dye concentrations for dyeing the samples were 5, 10, 15 and 20 mg/dm3, while the time of the dyeing process were 5, 10, 15,...

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