Dyeing of Acrylic Fibers with Natural dye from Phellodendron Amurense

Natural plant dye phellodendron amurense was extracted using a conventional water extract process and optimal extract process was selected by orthogonal scheme. The orthogonal analysis results showed extract temperature was the most important factor. The stability investigation showed phellodendron amurense extract was stable in a weak acid and alkaloid environment and common metal ion such as Na+, K+, Ca2+. Acrylic fiber had been dyed with phellodendron amurense aqueous solution. The dye uptake rate of acrylic fibers increased with the increase of dyeing temperature. The optimal dyeing process was selected by orthogonal experimental as follows: dyeing temperature 90 degrees C, pH value 3, dyeing concentration X, dyeing time 80min and bath ratio 80:1. Color fastness to washing and rubbing of the dyed acrylic were both above 4 grade.