天然染料黄菊花稳定性及其在羊毛上的染色性能研究

Study on Stability of Yellow Chrysanthemum Flower Vegetable Dyestuff and Its Dyeing Properties on Wool Fabric

研究了黄菊花色素的稳定性,及其在羊毛织物上的染色性能。结果显示黄菊花色素耐热稳定性较好,耐酸性（pH值3~7）较好,耐碱性较差;采用铝预媒染染色羊毛染出颜色最黄。通过正交实验确定最佳染色工艺为浴比1∶25,温度100℃,染液pH值5,媒染剂用量6%（owf）,染料用量40%（owf）。

Stability of yellow chrysanthemum flower and its dyeing properties on wool fabrics were investigated.The investigation showed that the pigment of yellow chrysanthemum flower was stable at pH value of 3~7,and was unstable when its pH value was above 7.Wool fabric which pre-mordanted with aluminum mordant could achieve deeper yellow color.According to achieve deeper color and higher grade fastness properties,orthogonal experiments were used to study the optimum conditions of pre-mordant dyeing with aluminum ions.The result indicated the bath ratio was 1∶25,dyeing temperature was 100 ℃,pH value was 5,the concentration of aluminum mordant was 6% of the fabric and the concentration of the yellow chrysanthemum flower dyestuff was 40% of the fabric.