Clean Technology (청정기술)

The Korean Society of Clean Technology (한국청정기술학회)
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Supercritical Fluid Dyeing of Polyester Fiber with Two Different Dispersion Dyes

두 종류의 분산염료를 이용한 폴리에스테르 섬유의 초임계유체 염색

  • Jung, In-Il (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • Lee, Sang-Yun (Department of Chemical Engineering, The University of Suwon) ;
  • Lim, Gio-Bin (Department of Chemical Engineering, The University of Suwon) ;
  • Ryu, Jong-Hoon (Department of Chemical Engineering, The University of Suwon)
  • 정인일 (연세대학교 공과대학 화공생명공학과) ;
  • 이상윤 (수원대학교 공과대학 화학공학과) ;
  • 임교빈 (수원대학교 공과대학 화학공학과) ;
  • 유종훈 (수원대학교 공과대학 화학공학과)
  • Received : 2011.02.11
  • Accepted : 2011.03.22
  • Published : 2011.06.30
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Abstract

The dyeing of polyester fiber with two different disperse dyes (Disperse Red 60 and Disperse Yellow 54) was carried out using supercritical carbon dioxide ($SCCO_2$) as a dyeing medium at temperatures ranging from $50^{\circ}C$ to $90^{\circ}C$ and at pressures from 15 MPa to 30 MPa. The dye uptake of Disperse Red 60 on polyester fiber was found to increase with temperature at constant pressure and $SCCO_2$ density (700 kg/$m^3$). At $90^{\circ}C$ and 30 MPa, the dye uptake on polyester fiber increased with dyeing time and the saturation concentration of Red 60 was attained within 240 min, while a longer dyeing time was required for Yellow 54 to reach its saturation concentration. When dyestuff mixtures with mixing ratios of 0.01 to 9.0 (Red 60/Yellow 54) were used, the uptake ratio of the two dyes was found to be proportional to 0.26 power of their mixing ratio. Dyed fibers showed an orange color and the depth of the color depended upon the mixing ratio of the dyestuffs.

본 연구에서는 초임계 이산화탄소를 사용하여 $50{\sim}90^{\circ}C$의 온도와 15~30 MPa의 압력범위에서 두 종류의 분산염료(C.I. Disperse Yellow 54, C.I. Disperse Red 60)를 사용하여 폴리에스테르 섬유의 염색에 대한 연구를 수행하였다. 동일압력(30 MPa)과 밀도(700 kg/$m^3$) 조건에서 Red 60을 이용한 초임계유체 염색을 수행한 결과, 온도 증가에 따라 폴리에스테르 섬유 내에 염착되는 염료의 양이 증가하였으며, Red 60의 경우 $90^{\circ}C$, 30 MPa의 염색 조건에서 240분내에 염착평형상태에 도달하였으나, Yellow 54의 경우는 360분 이상의 염색시간이 요구되었다. 다양한 혼합비율(Red 60/Yellow 54, 0.01~9.0 wt./wt.)로 두 종류의 염료를 배합하여 초임계유체 염색 실험을 수행한 결과 Red 60/Yellow 54의 혼합비에 대한 Red 60/Yellow 54 염착량비는 로그스케일 그래프에서 비례하는 것을 확인하였다. 색상은 두 염료의 중간색인 오렌지색을 얻을 수 있었으며, 색의 짙은 정도는 염료의 혼합비율에 의존하는 것을 확인하였다.

Keywords

References

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