• Journal of the Korean Home Economics Association
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• v.43 no.8 s.210
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• pp.1-12
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• 2005

Ash solutions derived from vegetation have been known for their good mordanting action. They are used as finishing agents because they are able to promote dye uptake. It is expected that the types of ash solutions may have been different worker by worker since the workers have employed easy-to-get plants, when we reviewed old literature. However, the ash solutions are being used without clear distinctions between their characteristics. In this study, camellia ash solution and rice straw ash solution were prepared according to traditional methods. Using these solutions as mordanting agents, natural dyeing experiments with Caesdpinia Sappan were peformed. Following the dyeing procedure, the effect of the type of ash solution on the color of the dyed fabric was evaluated. The results showed that the ash solution mordanting effect us not dependent upon the components of the ash solution. It was also demonstrated that the mordanting effect was not based on the action of the metallic ions in the ash solution. The pH values of the ash solutions were adjusted in order to investigate the effect of changes in ash solution alkalinity on the dyeing process. The pH values ranged from neutral or weak acidity to the alkaline range in order to evaluate the characteristics of the mordanting tv the ash solutions.

• Journal of the Korean Society of Clothing and Textiles
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• v.29 no.11
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• pp.1465-1474
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• 2005

The primary purpose of this study is to investigate the differences in the characteristics of the mordants, synthetic aluminum mordants and ash solutions as natural mordants, used in Caesalpinia sappan dyeing. By introducing aluminum potassium sulfate in the ash solutions, the behavior of the aluminum in the ash solutions were observed. In the rice straw ash solutions, adjusted to the levels of pH6 and pH10, the aluminum potassium sulfate was introduced to achieve various concentration levels. From the analysis of the ash solution of pull, $K^+$ and $Na^+$ ion concentrations were found to be extremely high, while $Al^+$ ion concentration was 0. The color development in the Caesalpinia sappan dyeing by ash solution mordanting was found to be mainly governed not by the mordanting actions of the metallic ions but by those of alkali components. In the case of cotton, the application of pH10 ash solution promoted reddish color development compared to the case of non-mordanting, regardless of the aluminum potassium sulfate addition. In the case of silk, the application of pH10 ash solution increased a* value and decreased b* value compared to the case of non-mordanting.

• Journal of Sericultural and Entomological Science
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• v.37 no.2
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• pp.161-166
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• 1995

Safflower is natural red dye largely used for dyeing on protein and cellulose fabric. It contains safflower yellow and carthamin red. Safflower yellow is water-soluble dye, while carthamin red is soluble in alkaline condition. Therefore the former was extracted by cold water. Cartamon obtained by adding acidic solution to carthamin red shows the original hue of safflower. In this study, the condition of extraction with bean stem ash solution and dyeing behavior of carthamon in safflower were examined by using the traditional dyeing method. The relationship between the dye-uptake(K/S) of silk and ramie fabric and the various extractions and dyeing conditions was investigated.

• Journal of Sericultural and Entomological Science
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• v.47 no.1
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• pp.31-35
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• 2005

This study had done to find an easily-dyeing method for novices because the dyeing method of traditional indigo has not been general to the public so that only an expert could dye the fibers. The results are as the following. When the powders after burning the shell of cockle (tegillarca granosa) were added. pH of the solution was 12.35 The k/s value of 2.49 was the highest in the dye after dipping in the solution of indigo for 1-2 days and the k/s value was 3.10 when adding 20 g/l of the starch (55% corn-starchy products in Korean market) into the solution of indigo. In addtion, the k/s value was the highest when fermenting temperature was $30^{\circ}C$ and when the powders after burning the cockle shell were 4 g/l. There were no differences between water and lye of rice straw which had used for the ferment of indigo. The components of two dye which has traditionally made of the cockle shell and which has made of calcium hydroxide were all the same.