抄録
The reactivity of oxidative dye intermediates penetrated into wool fibers was investigated. The wool fabrics which were treated in p-phenylenediamine, p-phenylenediamine/p-amino-o-cresol, and p-phenilendiamine/resolcinol aqueous solution at 30°C for 10 minutes were oxidized by hydrogen peroxide. The adsorbed intermediates were found to be able to react inside the fiber by the oxidative effects. However, these fabrics were unevenly colored, and the concentration of oxidative dyes developed by reacting among the oxidative dye intermediates inside wool fibers were much lower than that of them in the fibers dyed with the same precuser/coupler/H2O2 dyeing system under the similar conditions. In particular, the K/S-λ curve of the wool fabric that were dyed by pPDA/RC solution including EDTA and ascorbic acid followed by the treatment with hydrogen peroxide was definitely different from that of the wool fabric dyed with pPDA/RC/H2O2 dyeing system. Consequently, it was suggested that the reaction among the oxidative dye intermediates inside the wool fiber is side reaction for the mechanism of oxidative dyeing under the precuser/coupler/H2O2 dyeing condition for keratin fiber.
