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Natural Dyeing of Sheep Leather with Amur Cork Tree

황백을 이용한 양피에의 천연염색

  • Kim, Sangyool (Dept. of Clothing & Textiles, Mokpo National University)
  • Received : 2016.09.27
  • Accepted : 2016.11.15
  • Published : 2016.11.30

Abstract

In this research, the dyeing properies of Amur cork tree on sheep leathers were evaluated. The proper dyeing conditions were identified with K/S values depending on the colorant concentration, dyeing time, dyeing temperature and dye bath pH. For the proper conditions, the changes of color for different mordants(Al, Cu and Fe) were observed as $L^*a^*b^*$ coordinates and H V/C values. The color fastnesses were also examined, and the antimicrobial properties were examined. The results were as follows: For the sheep leather, the optimized dyeing conditions were 300% o.w.f., 40 min., $40^{\circ}C$, and pH 5. The leather color was yellow in the dyeing and mordanting. Although the $L^*a^*b^*$ changed with the mordants and mordanting methods, the overall hue was yellow. The colorfastness to light was reduced compared to original(untreated) sheep leather. The rubbing fastness was generallry satisfactory as 4-5 rating. The dry-cleaning fastness(stain) of leathers were generally at the 4-5 level, but dry-cleaning fastness(fade) was a little reduced compared to original sheep leather. The dyed and pre-mordanted and dyed sheep leather showed excellent antimicrobial properties.

Keywords

References

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