Add time:08/04/2019         Source:sciencedirect.com

The dyeing of polyester fabric with CI Disperse Yellow 54 has been carried out in the presence of ammonium persulphate. The oxidant markedly reduces the pH of the dyebath, necessitating the use of a buffer of strong buffer capacity. FTIR attenuated total reflectance (ATR) spectroscopy has been used to investigate the enhanced colour yield and improved fastness to DMF extraction imparted to the dyeings by the oxidant; no evidence was found to confirm covalent attachment of the dye to the substrate.

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