活性染料光汗稳定性的影响因素

he fading of nine reactive dyes under light and perspiration was tested using ATTS standard and many factors affecting the stability of these dyes were discussed, viz. exposure environment, chromophores, the pH value and components of the artificial perspiration. The experimental results show that reactive dyes exhibit lowest stability under simultaneous exposure to light, perspiration solution and oxygen and among all dyes, Cu-complex azo reactive dyes appear to be the most sensitive, whereas anthraquinone reactive dyes show the best stability. The pH value of perspiration could also greatly influence the fading of dyes by affecting the hydrolytic stability of dye-fiber bonding. Furthermore, the study on the contribution of artificial perspiration components discloses that some acidic components play the major roles on the fading of the dyes and inorganic salts usually decelerate the fading extent.