Natural Dyes Pokeweed Berries Pigment Dyeing Properties Of Wool Fabric

In this paper, the natural pigment dye Phytolacca berries on dyeing properties on wool fabric was studied. Ion exchange resin was used to extract pigment. The best process conditions were studied in direct dyeing. We identified A13+metal mordant on pigment dyeing of wool fabric mordant dyeing method, the optimum process were discussed in this paper. Finally, chitosan was studied in the Phytolacca berry pigment dyeing properties on wool fabric. Crock fastness and washing fastness were compared in different dyeing conditions.D301ion exchange resin was used to extract pigment. The result shows:5g resins can absorb pigments froml00g berries, pH value is5, the temperature is25℃,0.10mol/L-HC170%ethanol solution as eluting agent.The direct dyeing was studied in single-factor experiments. Experiment showed the optimum dyeing process, temperature was60℃,the dye bath pH value was3.5, Pigment dosage5%(V/V), Salt played a role of retarding agent in dyeing.Post-mordant dyeing had good color fastness and less influence on color of dyed fabric. Orthogonal experiment showed the optimum dyeing process was that mordant dosage of A13+was2.5%(owf), temperature was60℃, time was50min. This paper broadens the scope of the use of natural dyes and has theoretical guiding significance in the actual application of Phytolacca berry natural dye.Dyeing of wool fabrics with natural dyes from Phytolacca berries has been studied by orthogonal experiment. It has been proved that the dyed wool samples pretreated by chitosan have higher color fastness, better antibacterial properties (more than80%after thirty times washed) compared with untreated ones. Chitosan can be used as environmental mordant instead of metal mordantThis paper broadened the scope of the use of natural dyes, it had theoretical guiding significance in the actual application of Phytolacca berries.