荞麦壳色素的提取及对羊毛织物的染色性能

采用天然染料荞麦壳提取液对羊毛织物进行染色,通过响应面法得到优化的荞麦壳色素提取工艺:粉碎目数100目、提取温度100℃、提取时间144 min,色素的产率为4.36%。通过正交试验得到直接染色的优化工艺条件:染色pH值5、染色温度100℃、染色时间80 min。选择三种媒染方法和三种媒染剂分别对羊毛织物进行染色,测试染后织物K/S值、防紫外线性能及色牢度。结果表明,以硫酸铝钾作为媒染剂的后媒染工艺染得织物的K/S值较大,媒染剂的使用提高了织物的耐摩擦色牢度,降低了UVA、UVB的透过率。

Extraction of buckwheat husk and dyeing properties on wool fabric

The wool fabric is dyed with natural dye extracted from buckwheat husk.The extraction pro cess of buckwheat husk obtained by response surface method is 100 mesh size,extraction temperature of 100℃,extraction time of 144 min,and the yield of pigment is 4.36%.The optimized process condi tions for direct dyeing obtained by orthogonal test are pH value of 5,dyeing at 100℃for 80 min.Three mordant dyeing methods and three mordants are selected to dye the wool fabric,and the K/S value,UV protection and color fastness of the dyed fabric are tested.The results show that the highest K/S value is obtained by the post-mordant dyeing process with aluminum potassium sulfate as the mordant,and the use of the mordant increases the rubbing fastness of the fabric and reduces the transmittance of UVA and UVB.