桑叶染色液提取法与染色性能

 为了探索提取方法和提取剂对桑叶染色液染丝绸的效果,采用沸水浴与微波法提取桑叶染色液,结果表明:染色液中的黄酮含量及对丝织物的上染率均以微波法较高。采用微波提取法,通过正交试验研究提取剂对上染率和色光的影响,结果表明对上染率影响最大的是表面活性剂用量,其次为NaOH浓度,再次为表面活性剂种类;对色光影响的次序是NaOH浓度大于表面活性剂用量和种类。采用微波提取法并在NaOH提取剂中加入表面活性剂的桑叶染色液染色效果较好。

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 dosage>NaOH concentration>types 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.