Colour of polyester thread, in regard to different dyeing procedures and dye-bathsć phFakin, Darinka (Avtor) Ojstršek, Alenka (Avtor) Majcen Le Marechal, Alenka (Avtor) polyester sewingdyeingdisperse dyestruffscolourimetryThe aim of the presented research was to investigate the impact of different dyeing procedures (conventional two-baths and one-bath) and dye-bathsć pH (acidic and alkaline) on the exhaustion of five disperse dyestuffs, differing in colour (yellow, red, blue, violet and black). The dyeing of polyester thread was carried-out at two concentrations (1 and 3%). The concentration of dye residual in dye-bath effluents were determined by absorbance measurement, followed by colourimetrical evaluation of dyed samples, and colour differencescalculation. The obtained results indicating superior dye exhaustion throughout alkaline one-bath procedure in comparison to conventional polyester dyeing that affect also on reduction of dyeing time, amount of dye-bath wastewaters, and energy consumption.20082012-05-31 12:14:22Neznano26219sl