Journal of the Korean Home Economics Association (대한가정학회지)

The Korean Home Economics Association (대한가정학회)
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Improving UV-cut Ability of Natural Dyed Fabrics - Focused on Cellulose Fabrics Dyed with Safflower Yellow Colorants -

천연염색 직물의 자외선 차단 성능 증진 연구 - 홍화 황색소 염색 셀룰로오스 직물을 중심으로 -

  • Shin, Youn-Sook (Department of Clothing and Textiles, Chonnam National University, Human Ecology Research Institute, Chonnam National University) ;
  • Choi, Seung-Youn (Chonnam National Universtiy Museum)
  • 신윤숙 (전남대학교 의류학과.전남대학교 생활과학연구소) ;
  • 최승연 (전남대학교 박물관)
  • Published : 2007.12.30
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Abstract

The purpose of this study was to increase the ultraviolet-light (UV)-cut ability of cellulose fabrics (cotton, ramie, and rayon) dyed with safflower yellow colorants. For this purpose, samples treated with UV-cut agent and tannic-acid were compared with the untreated samples after UV exposure in terms of K/S value, color changes(${\Delta}E$), SEM, and strength retention. The K/S value rapidly decreased after 28 days exposure, whereas the K/S value of the samples treated with both UV-cut agent and tannic-acid decreased to less than that of the untreated samples. In color changes, $L^*$ increased while $a^*$ and $b^*$ decreased, indicating less red and yellow character in color. This induced a change in the hue, value and chroma values. However the color change(${\Delta}E$) of the samples treated with both UV-cut agent and tannic-acid was less than that of the untreated samples. Scanning electron microscopy (SEM) pictures showed a severe degradation by exposure in all samples. Tensile strength rapidly decreased after 28 days for cotton and rayon, and after 21 days for ramie. However, the strength retention of the samples treated with UV-cut agent and tannic-acid was higher than that of the untreated samples.

Keywords

References

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