Textile Coloration and Finishing (한국염색가공학회지)

The Korean Society of Dyers and Finishers (한국염색가공학회)
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The Influence of the Contact Amount of Supercritical CO2 on Dyeing Uniformity

초임계 CO2 접촉량이 염색 균염성에 미치는 영향에 대한 연구

  • Received : 2018.10.17
  • Accepted : 2019.01.17
  • Published : 2019.03.27
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Abstract

The influence of the contact amount of carbon dioxide per unit mass of dyestuff(${\alpha}$) on dyeing uniformity in supercritical fluid dyeing is analyzed in this study. The experiments using a 5L class Pilot Scale dyeing machine is carried out for this study purpose. For a fixed temperature and pressure, the amount of sample and the dyeing leveling time were considered as process variables. The results show that the increase in the amount of the sample causes a higher color difference than the reference sample, and it also increases the amount of residual dye. On the other hand, the color difference tended to decrease with the increase in dyeing time. Based on these results, the correlation between ${\alpha}$ value and dyeing uniformity in supercritical fluid dyeing is obtained.

Keywords

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Figure 1. Chemical structure of Red 167.

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Figure 2. 5L class pilot scale supercritical CO2 dyeing machine.

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Figure 3. Experimental equipment for supercritical fluid dyeing.

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Figure 4. Dyeing cycle.

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Figure 5. Colorimetric position.

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Figure 6. Comparison of color difference and α along the PET mass.

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Figure 7. Residual dye depending on PET mass.

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Figure 8. Comparison of color difference and α along the dyeing time.

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Figure 9. Color difference before and after cleaning along the dyeing time.

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Figure 10. Capture of color difference before and after cleaning along the dyeing time.

Table 1. Information of fabric and dyestuff

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