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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 were tested. The results showed that the absorbance of the pigment extracted by microwave-assisted extraction method was the highest, and the best dying techniques as: osmotic dosage of 1.5ml, and mordant 15ml dye pH 10, dyeing temperature of 60 degrees centigrade. The color fastness and wet fastness cannabis/mulberry fiber blended yarn after dyeing achieve level 3 or above.

Dyeing Performance of Yellow Pigment from Ginkgo Biloba Leaves on the Cannabis/ Mulberry Fiber/Wool fiber Blended Yarn