Abstract
The dyeing properties of polyamide super‐microfibres and conventional fibres dyed with disperse dyes have been studied by measuring the adsorption isotherm, the rate of dye uptake, the time of half‐dyeing and the amount of equilibrium adsorption. The thermodynamic analysis shows that the adsorption isotherms of super‐microfibres follow a Langmuir sorption model. The kinetic results show that super‐microfibres have a faster dyeing rate and a higher equilibrium dye uptake compared to conventional fibres. This can be explained by the greater surface area and dye capacity of the super‐microfibres. The wash and light fastness properties of the super‐microfibres dyed with disperse dyes are lower than conventional fibres.
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