Method of extracting the mulberry leaves′ dye-liquid and its dyeing behavior

To explore the method of extracting dyeing liquid from mulberry leaves and the effect of extracting agents on the dyeing silk fabric with the dye liquid,the boiling water bath and microwave technique were employed to carry out mulberry leaves dye liquor extraction with different extracting agents.The dyeuptake on the silk fabrics and flavones content were higher with the mulberry leaves dye liquid extracted by microwave than those by boiling.The influence of extracting agents used in the microwave technique on the dye-uptake and shade of the dyed fabric was investigated through orthogonal experiments.The results indicated that the order of effective factors on dye-uptake is surfactant dosageNaOH concentrationtypes of surfactant,and the influence on fabric shades is NaOH concentration surfactant dosage and types of surfactant.The best dyeing result has been obtained with the mulberry leaves dye liquid extracted by microwave technique with NaOH extracting agent incorporated with surfactant.