Temperature Dependence of the Dye Diffusion Rate in the Carrier Dyeing of Polyester Fiber

Abstract

The Temperature dependence of dye penetration coefficients in the carrier dyeing, of polyethylene terephthalate fiber, with three kind of carrier, was investigated.
It was found that the temperature dependence of dye penetration coefficients is in accord with the Williams-Landel-Ferry equation which has been observed for diffusion coefficients in the, normal dyeing (without carrier),
where aT is the shift factor, p and ps are the dye penetration coefficients at absolute tempe, rature, T, and at the standard temperature, T, respectively.
The standard temperatures in the carrier dyeing were lower than those of the normal dyeing. The standard temperatures in the normal and each carrier dyeing were about 20°C higher than those of contraction under the same treatment.