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Efficacy of Amaranth(Amaranthus spp. L.) Plant as a Natural Dye Resource: Focused on Wool Dyeing

  • Textile Coloration and Finishing
  • Abbr : Text. Color. and Finish.
  • 2020, 32(2), pp.89-95
  • DOI : 10.5764/TCF.2020.32.2.89
  • Publisher : The Korean Society Of Dyers And Finishers
  • Research Area : Engineering > Fiber Engineering > Dyeing Engineering
  • Received : June 9, 2020
  • Accepted : June 24, 2020
  • Published : June 27, 2020

Youngmi Yeo 1 Shin, Younsook 1

1전남대학교 의류학과

Accredited

ABSTRACT

In this study, the efficacy of Amaranth(Amaranthus spp. L.) as a natural dye resource was investigated for wool fabrics. It is known that a large amount of flavonoid and anthocyanin colorant are contained in leaves and stems, as well as red flowers. The optimum condition of dyeing was 1.3% of dye concentration(o.w.b.) at 100°C for 60 minutes, resulting the K/S value, 23.43 and R Munsell color on the wool fabrics. Al, Fe, Zinc and Titanium were used as a mordant. The mordant improved the dye uptake, regardless of the mordant type and mordant method. The pre-mordanting method was more effective than the post-mordanting method. Al pre-mordanted fabric showed the highest K/S, 30.02. Light fastness and washing fastness were high in grades 4-5 and 5, and rubbing fastness was good in grades 4 and 4-5 in dry condition, but low in grades 2-3 and 3 in wet condition. The dry cleaning fastness was excellent in all 5 grades. However, the alkaline perspiration fastness ratings were low in grades 2-3 and 3. The results show Amaranthus spp. L. colorant can be used as a functional natural dye for wool fabrics.

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This paper was written with support from the National Research Foundation of Korea.