Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

The Influence of Sodium Salt on the Polyester Dyeing

Sodium Salt가 폴리에스테르 염색에 미치는 영향

  • 이범훈 (한양대학교 섬유공학과) ;
  • 정재윤 (한양대학교 섬유공학과) ;
  • 정성훈 (한양대학교 섬유공학과)
  • Published : 2001.09.01

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Abstract

Color strength is reduced by hydrolysis, reduction or oxidation of disperse dyes during the polyester dyeing process. This discoloration is caused by dyeing conditions such as temperature, pH of the dye bath and the chemical reactions of the dispersing agents, etc. Chemical reduction of certain azo disperse dyes results in lower color yield. To prevent reduction of disperse dyes, sodium salts were added as weak oxidants to the dye bath for polyester fiber. Dyeing was carried out with four commercial azo or anthraquinone disperse dyes in the presence of sodium salts(NaCl, NaBr, NaI). The effects of sodium salts on color strength and fastness are discussed. In the case of azo disperse dyes, color yield increases as the concentration of sodium salts increases.

Keywords

References

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