Natural dyeing has traditionally been used in many countries around the world, and as natural dyes are diversified, the diversity of dyeing patterns is also expanding. This study tried to establish standardization by providing numerical values that could provide quantified information to the Internet of Things by more accurately analyzing the color changes of dyes and mordants for the four natural dyes. The addition of copper acetate, iron II sulfate and potassium dichromate to the dye extracted Linn changed the original color of brown to other colors of purple, khaki and dark from brown, respectively. Except for potassium dichromate added to L. or , the concentration of other mordants was reduced, but the color difference of the dyed silk was very large. However, although there is a difference in degree, copper acetate and iron sulfate induced color changes of 35% and 15%, respectively. In summary, it was confirmed that the highest color change was induced when 15 grams of copper acetate was added to Linn, and 150 grams of iron to . The results of L. and this study suggested that the accurate color change by various mordants can be utilized as important information that enables more accurate color induction by dyes and mordants.
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