Abstract
The photofading behaviors of anthraquinone disperse dyes on polylactide fabrics were investigated. The fabrics which had been dyed with 13 commercial dyes were exposed to a carbon arc light source. The polylactide fabrics dyed with Disperse Red 127 or Violet 26, which have phenoxy substituents, showed the light fastness higher than 4 grade. The dyes for acetate fabrics, Violet 1, Blue 3 and Blue 7, were not available for polylactide fabrics because of their large color change by light. Disperse Red 127 and Violet 27 on polylactide fabrics had the highest light fastness grades in them. Their light fastness depended on the amount of sorbed dye. The deeper color fabric tended to have a higher light fastness than the paler color one. However, in the case of Disperse Violet 27, the light fastness of the palest color fabric, which had been dyed with 0.01% ouf of it, was about 0.7 grade higher than that of 0.03% owf. When the polylactide fabric had been dyed with the mixture of Red 127 and Violet 27, the photofading behavior was retarded as compared with the individually dyed ones.
