抄録
The following samples of nylon 6 were prepared. Dyed film (DF); hot-pressed film was dyed at 100°C or 80°C with disperse dye (1, 4-diamino anthraquinone). Heat-treated film (HF); DF was heat-treated at 150°C for 5 hr. Melt-treated film (MF); DF was fused and quenched. The dye desorption in water at 70_??_100°C for above samples was measured, and compared with the dye absorption for the control sample treated by the same condition without dyestuff.
The crystallinity of DF and HF are nearly same to that of their control samples, but the crystallinity from density method of MF is fairly higher than that of its control sample. The estimated non-desorbed residual dye content is zero for the sample dyed at 80°C and desorbed at 100°C, while that of the other samples increases in the order of DF<MF<HF, and increases with decreasing the desorption temperature. Diffusion constant decreases in the order of DF>MF>HF, and does not depend on the temperature of dyeing. Diffusion constant of the dye absorption is larger than that of the dye desorption especially for the heat-treated samples.
