Fashion & Textile Research Journal (한국의류산업학회지)

The Society of Fashion and Textile Industry (한국의류산업학회)
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Changes in the Adsorption Behavior of Coptidis Rhizoma Dyed Fabrics by Chitosan and Tannin Treatment

키토산과 탄닌처리에 의한 황련염색직물의 염착거동 변화

  • Ryu, Soo Jin (Dept. of Clothing & Textiles, Changwon National University) ;
  • Bae, Hyun Sook (Dept. of Clothing & Textiles, Changwon National University)
  • Received : 2018.02.27
  • Accepted : 2018.03.10
  • Published : 2018.04.30
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Abstract

The natural dye product market is expanding due to the recent interest in environmentally friendly products. This study examines dyeing using natural Coptidis Rhizoma. Chitosan and Tannin was treated to improve dyeability of Coptidis Rhizoma after finding the proper dyeing condition. In addition, dyeing characteristics were compared according to mordant types along with the mordanting methods for dye fixing and color change. The results indicated that the optimum dyeing condition was to treat the concentration of 5% (o.w.b.) at $80^{\circ}C$ for 90 minutes. By the chitosan and tannin treatments, K/S value of cotton fabrics by 3 times and those of wool fabrics by 2 times increased and color depthing of dyed fabrics was achieved after 2 cycles repetition. To improve dyeability, iron mordanting was most effective; in addition, the K/S Value of pre-mordanting fabrics versus post-mordanting fabrics increased the most. The color of the surface was changed to reddish yellow when Sn, Cu mordanting, and to greenish blue when Fe mordanting. The lightfastness of dyeing fabric with mordanting was weak at 1-2 grades, but the washing fastness was good for 4 grades and the rubbing fastness and sweat fastness were as good as those of the 3-4 grades. As a result, this study could help improve the dyeability of expensive Coptidis Rhizoma.

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References

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