Dyeing Kinetics and Colouristic Properties of Blend PP/PES Fibres

The aim of this work was the study of the dyeability of blended polypropylene/polyester (PP/PES) fibres. Blended PP/PES fibres contain various polyesters - polyethylene terephthalate (PET), polybuthylene terephthalate (PBT), polytrimethylene terephthalate (PTT) and a blend of these polyesters. The fibres were dyed with C.I. Disperse Blue 79 and C.I. Disperse Violet 95 at 98°C. The dyeing kinetics and colouristic properties of these fibres were investigated. In addition, the influence of different contents of individual PES was also studied.