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The Interpratation of Dyeing Behavior of the Easily Dyeable Polyester Yarn under Atmospheric Pressure by Thermodynamic Parameters

  • Textile Coloration and Finishing
  • Abbr : Text. Color. and Finish.
  • 2002, 14(1), pp.51-57
  • Publisher : The Korean Society Of Dyers And Finishers
  • Research Area : Engineering > Fiber Engineering > Dyeing Engineering

김태경 1 윤석한 1 신상엽 2 Lim,Yong-Jin 3 조규민 4

1한국염색기술연구소
2새한섬유가공연구소
3경북대학교
4영남이공대학

Candidate

ABSTRACT

In the prior study, the mechanical properties and the dyeability of the easily dyeable polyester yarn(EDY) were investigated. In this study, to interpret the dyeing behavior of EDY with C. I. Disperse Violet 1, the thermodynamic parameters of dyeing, such as the standard affinity, the heat of dyeing(the enthalpy change), the entropy change, the diffusion coefficient, and the activation energy of diffusion, were obtained from adsorption isotherms and dyeing rate at various temperatures and compared to those of regular polyester (REG-PET).The heat of dyeing(the enthalpy change) and the entropy change for EDY showed smaller negative values than those for REG-PET. This means that the dye molecules in the EDY are combined more loosely than in the REG-PET and that is due to the flexibility of polymer chains of EDY. The diffusion coefficients of C. I. Disperse Violet 1 into the EDY were larger than those for REG-PET, and the activation energy of diffusion on EDY was smaller than that on REG-PET.

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