Abstract:

In order to improve the whiteness and decrease the light yellowing rate of wool fabric, the wool fabric was bleached by oxidation and oxidation/reduction combine bleaching process firstly, and then the bleached wool fabric was irradiated by UV light, its light yellowing process was measured, and the injluence of bleaching on morphology and light stability of wool fabric was discussed. The anti-ultraviolet finishing of wool was treated with UV absorber UVFW and the UVFW finishing effect on the wool light stability was discussed. The results show the whiteness of wool increas, and the light yellowing rate and light tender rate also increase. The wool fabric which treated by oxidation/reduction combine bleaching process and anti-ultraviolet finishing with 1% (o.w.f) UVFW has good light stability, and its whiteness is even slightly higher than that of oxidation bleached wool fabric after UV irradiation for 6 h, which will contribute to higher whiteness, higher surface wettability and adsorption capacity to improve the adsorption and diffusion of UVFW to wool fiber.

Key words: wool, light yellowing, bleach, UV absorber, light stability, surface wettability