| Recent years, People began to pay attention to the environmental protection and the health with the improvement of people's living standard. The potential safety factor of Synthetic dyes has aroused people's common concern. At present, more and more people began to seek the security of the raw materials of textile, natural dyes development has become an important direction in the dyestuff industry future. Natural dyes are searched from nature with much types and rich colour. Besides, they have small impact on environment and care function. Today, people pay more attention to plant dyestuff for its avirulent, harmless, pollution-free.In order to increase dyeing ability of wool fabric with natural dyestuff, the scale of wool fiber was oxidized by Fenton reagent. We focus on discussing the method and impact of Fenton reagent on wool fabrics with different natural dye. At the same time, Fenton's reagent have very strong oxidation effect, which could damage difficult degradable in the water and were widely used in environmental pollution.Fenton reagent was safe and convenient in the textile process, which could pretreat on wool fabric and oxidize the wool scale. Also, dyeing behaviours can be increased. It was also indicated that dye uptake was increased. The material of Experiments all belong to the nature. The paper was a subject that the scale of wool fabric was oxidized by Fenton agent method. Compared with the methord of hydrogen peroxide pretreatment independently, protease treated alone and other conventional oxidations, Fenton agent could decompose the scale of wool fabric in effect. The oxidative effect of Fenton agent on the wool scale was investigated, at the same time, dyeing behaviours of Lithospermum, Sappanwood and Granatum dyes on wool were also studied. And then, we could improve efficiency and saving energy.The result of SEM would show and compare the different pretreatment method. And dye-uptake amoung the fabrics dyed with different extracting sulotions were compared through the absorbenc value and ?E. Finally dyeing fastness was tested.The results showed that optimal condition of Fenton reagent:at first, C12H25NaO4S was 1 g/L at 40? with 30 min. Then, FeSO4·7H2O was put with 0.1 g/L at 40? in the 30 min. And the concentration of H2O2 was 50g/L at 70? with 60min.At last, EDTA was 1g/L at 80? with 20min The optimal process of wool fabric dyed with Lithospermum was:dyeing temperature 85?, dyeing time 60min, the concentration of Lithospermum dye 90%, pH value 4. The results showed that, pH value influenced dyes greatly, there is allochroic behavior. The optimal condition of sappanwood for dyeing was:dyeing temperature 80?, pH value 6-7, dyeing time 50 min, the concentration 80%. At the same time, the mordant enriched the brightness and improved dye saturation of granatum dyestuff. The optimal condition for dyeing was:pH value was 3-4, dyeing temperature 60?, dyeing time 40 min, the concentration of granatum dyestuff 50%, and the mordant was Fe+, Cu+, Al3+. The concentration of mordant were 10%?10%?20%. |
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