银杏叶黄色素对大麻/桑皮/羊毛混纺纱的染色性能

Dyeing performance of yellow pigment from ginkgo biloba leaves on the cannabis / mulberry fiber / wool blended yarn

以天然染料银杏叶为原料,采用微波法、水浴法、超声波提取法进行染料原液的提取,并对这3种方法提取的原液进行吸光度测定,以提取后的原液作为染料原液对25 tex大麻/桑皮/羊毛60/20/20混纺纱进行染色,采用p H值、染色温度、媒染剂用量、渗透剂用量4个因素进行分析染色效果,以单因素实验作为基础,进行4因素3水平的正交试验,将正交试验后的染色纱样进行色牢度的测定。研究结果表明:微波法提取的色素吸光度值最高,染色最佳工艺条件为:渗透剂用量1.5 m L,媒染剂用量15 m L,染色p H值10,染色温度60℃。大麻/桑皮/羊毛混纺纱染色后的变色牢度和沾色牢度均达到3级以上。

Using natural dye ginkgo leaves as raw materials, the dye liquid was extracted by microwave method, water bath method and ultrasonic extraction method, and the suck photometric of this three extraction liquid were tested. The 25 tex cannabis/mulberry fiber/wool 60/20/20 blended yarn was dyed by the extracted liquid. The four factors of pH value, dyeing temperature, mordant dosage, and penetration agent dosage were used to analyze dyeing effect. On the basis of the above four factors, three level of orthogonal experiment was designed to dye the blended yarn, the color fastness of the orthogonal samples was tested. The results showed that the absorbance of the pigment extractedby microwave-assisted extraction method was the highest, and the best dyeing techniques as： osmotic dosage of 1.5 mL, and mordant 15 mL, dyeing pH value 10, dyeing temperature 60 ℃. The color fastness and wet fastness of cannabis/mulberry fiber wool blended yarn after dyeing achieve level 3 or above.