먹물과 黃土의 混合染色에 관한 硏究
(A) Study on the Mixed Dyeing of the Chinese Ink and Loess
먹물 황토 혼합염색;
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The color of loess does not change variously by the mordant like the vegetable polygenetic colors and there is limits of expressing the color. Accordingly, it requires new methods for the diversity of color. Among them, the color change by the iron content in the loess, that is, single dyeing with yellow, red, and purple loess and mixed dyeing with the loess and Chinese ink will be a method. This mixed dyeing method was made an attempt in the vegetable dyeing, but the research on the mineral dyeing is insufficient till now. Accordingly, it requires the necessity of research. For that, this study is to clarify the stainability and the characteristics of color according to the density, temperature, and time of the loess by using the yellow, red, purple loess for the diversity of color of loess. And it is to investigate the effect on the improvement of possibility and fastness about the diversity of color of loess while it maintains the constituent of loess with the execution of mixed dyeing with the loess after discovering the proper density about the color of mixed dyeing using the dying with the Chinese ink in advance. As a result of that, the conclusions are as follows. 1. When the single dyeing with the loess, it presented that the stainability is the best in the density of 30%o.w.b. As for the most proper temperature and time of dyeing then, a case of stirring 20 minutes at 60℃, and then stirring 20 minutes again with the increase 100℃ for 10 minutes again is improved in the stainability. It made an attempt to dye with the temperature change during regular time contrary to the method of dyeing by fixing the regular temperature that executed before. It had a high value of K/S compared with the fixed temperature method. Also, it showed that the yellow loess including the fine particle a lot among loess with three colors is improved. 2. The proper density of Chinese ink for getting proper brightness of mixed dyeing is 0.5, 1.0, 2.0, 2.5, 5%o.w.b. The grinded Chinese ink had better stainability compared with the general Chinese ink. 3. As a result of executing the mixed dyeing by making the density of loess and Chinese ink differentiated, there were change of color most precisely and improvement of stainability in the density of loess of 40%o.w.b among the yellow, red, and purple loess. The color in the single dyeing of yellow, red, and purple loess when the density of loess is 40%owb is 1.049Y, 7.581YR, and 0.253Y each. Contrary to that, the color in the mixed dyeing with Chinese ink is 3.801∼8.13Y, 0.128∼7.038Y, and 4.222∼9.304Y. There arose various change of color by the change of brightness and saturation according to the density of Chinese ink. 4. The colorfastness is 1∼2 in the single dyeing with Chinese ink. It increased to 1∼3 in the mixed dyeing. But it is considered the increase of stainability contributed to the improvement of fastness by mixing the Chinese ink with the more fineness than the loess. Light colorfastness of the single and mixed dyeing is excellent as a value of 5. The friction fastness in the single dyeing is 3∼3.5 in the drying state, and 3 in the wet state. It is similar to the drying state. Contrary to that, the friction fastness in the mixed dyeing is 2∼3 in the drying state, and 2∼2.5 in the wet state. It presented low in the drying and wet state compared with the single dyeing. As for the mixed dyeing, the dyes of Chinese ink wasn't absorbed into the fiber sufficiently, and existed as a state of being attached on the surface of fiber. Accordingly, the fastness was low because it was easily detached by the external impact like washing. After all, it obtained visible achievements for the diversity of color through the mixed dyeing with the yellow, red, and purple loess and Chinese ink. It is considered the research for improving the fastness should be continued.