The Effect of Sodium dithionite in Dyeing with Indigo Pulverata Levis (청대 염색에서 sodium dithionite의 영향)

조경래

The Effect of Sodium dithionite in Dyeing with Indigo Pulverata Levis

Textile Coloration and Finishing
Abbr : Text. Color. and Finish.
2015, 27(2), pp.155-163
Publisher : The Korean Society Of Dyers And Finishers
Research Area : Engineering > Fiber Engineering > Dyeing Engineering

조경래 ¹

¹신라대학교

Accredited

ABSTRACT

In dyeing cotton fabric with the Indigo Pulverata Levis, this research examined the effect of the sodium dithionite(Na2S2O4). For the separation of the Indigo-calcium hydroxide complex in the alkaline solution of the Indigo Pulverata Levis, the reduction with the Na2S2O4 at 25℃ was more effective than the solution boiling. The concentration of Indigo in the cotton fabric increased with the increase of Indigo Pulverata Levis, but the concentration of indirubin did not increase particularly. The optimum temperature for the reduction was 60℃, and K/S value of dyed fabric decreased at over 60℃. The concentration of indigo and indirubin in the cotton fabric decreased as Na2S2O4 concentration increased. In treating cotton fabric dyed with the Indigo Pulverata Levis by the Na2S2O4, the concentration of indirubin decreased and the surface color of dyed cotton changed from purple blue to blue while the treatment temperature was getting higher.

KEYWORDS

indigo, indirubin, Indigo Pulverata Levis, reduction, sodium dithionite

Citation status

* References for papers published after 2023 are currently being built.

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