Textile Coloration and Finishing (한국염색가공학회지)

The Korean Society of Dyers and Finishers (한국염색가공학회)
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The Effect of Sodium Sulfate in Liquid or Solid Form on Reactive Dyeing and Fastness Properties of Cellulose Knitted Fabric

액상 또는 분말망초 Type에 따른 Cellulose 편성물의 반응성염료에 대한 염색성과 견뢰도 연구

  • Kim, Mi-Ri (Korea Institute of Industrial Technology) ;
  • Lee, Hae-Jung (Korea Institute of Industrial Technology) ;
  • Lee, Jung-Jin (Department of Fiber System Engineering, Dankook University)
  • 김미리 (한국생산기술연구원) ;
  • 이혜정 (한국생산기술연구원) ;
  • 이정진 (단국대학교 파이버시스템공학과)
  • Received : 2010.11.18
  • Accepted : 2010.12.09
  • Published : 2010.12.27
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Abstract

Sodium sulfate is commonly added in reactive dyebath in order to increase substantivity of the reactive dye to cellulose fiber by reducing repulsion between anionic dye and fiber. While sodium sulfate is mostly used in solid form, it is inconvenient to dissolve a large amount of powder sodium sulfate. Furthermore, if there is undissolved salt in dyebath it might cause unlevel dyeing. In this study, sodium sulfate in liquid or solid form was used in dyeing of cellulose fabric with reactive dyes of three primary color and the effect of type or amount of sodium sulfate on dyeing and fastness properties was investigated. When the amount of sodium sulfate rose to 30-50 g/l, K/S value of the dyed fabric markedly increased; further rise in sodium sulfate concentration resulted in slow increase in K/S value. For light color, optimum amount was about 30 g/l in solid form and 50-100 g/l in liquid form while, for medium to deep color, it was 50 g/l and 100-150 g/l in solid and liquid form, respectively. When using each optimum amount of salt in solid or liquid form for medium color, shape of dyeing curve as well as exhaustion was similar to each other. On the whole, similar color fastness results were obtained regardless of type or amount of sodium sulfate.

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References

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