Dyeing Properties and Colorfastness of Direct-Dyed Ramie, Flax, and Cotton

모시, 아마, 면의 직접염료 염색에서 염색성과 염색 견뢰도에 대한 연구

In this paper, deying properties and colorfastness of ramie, flax, and cotton fabrics for direct dyes were compared. When dyed in a same dyeing bath ratio, in case of green dyes, colorfastness to light was similar for three fabrics but in case of red dyes, cotton had a lower level. For colorfastness to laundering, three fabrics were similar and there were no consistent differences. The degree of stain about white fabric cotton was highest in case of red dyes. The degree of stain about white fabric wool showed the high resistance of stain and little stain was seen. This result represented that the used dyes were proper direct dyes for cellulosic fibers. For the difference of shade, the cotton was cosistently brighter and the shade of ramie was darker than of cotton and flax. This might mean that optical effects arouse from the comparatively large cross-sectional size of the ramie fiber and its highly ordered structure.