A Comparative Study on the Dyeing Property of Natural and Artificial Fiber

This study aims to provide basic data to promote the development of indigo dyeing products in the future by comparing and analyzing the dyeing characteristics of natural fibers and artificial fibers among traditional Korean natural dyeing, which includes all things eco-friendly, ethical echo, spiritual and cultural. To this end, we wanted to learn about history of indigo dyeing in Korea and describe the method of making indigo dye in Jeong, Gwan Chae, an important intangible cultural asset No. 115. Natural indigo dyeing was performed by setting the same dyeing conditions for the four types of fibrous materials used in the experiment, and the dye tint and color values were evaluated. The four types of fibers used in indigo dyeing were most commonly used in modern times: silk, cotton, viscos rayon and polyester. Niram of Intangible Cultural Heritage No. 115 was used to dye four types of fiber, and Indigo dye was used, which was made by adjusting acidity to 11 with sodium hydroxide and returning it to hydrosulfite.Indigo dye was divided into four halves and dyed by setting the same temperature and time.Dyeing fastness of indigo dyed fiber was measured, washing fastness, sweat fastness, dry cleaning fastness, friction fastness and daylight fastness, and color value was measured L*, a*, b* values of the fiber were compared and analyzed. Dyeing property results of four types of fiber were generally rated better in natural fiber than in artificial fiber, and high dyeing property was shown in Viscos rayon, cellulose fiber among artificial fibers. Polyester fibers made from artificial materials were highly valued in dyeing tints. However, relatively near zero was found in the color value b*, indicating the blue family. Overall, indigo dyeing is highly regarded for its dyeing properties of artificial fibers made using natural fibers or natural materials. In line with the direction of the textile industry that values the environment, it is believed that a follow-up study is needed on the indigo dye nature of artificial fibers that extract yarn using waste plastics.