Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Dispersion Behavior of Disperse Dye during Polyester Dyeing

폴리에스테르 염색공정중 분삼염료의 분산거동

  • Published : 2000.04.01

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Abstract

The dispersion behaviour of disperse dyes under the dyeing condition was assessed by turbidity ratio, which increased with decreasing particle size of dyes. The four different dye dispersions of C.I. Disperse Blue 56 and C.I. Disperse Yellow 54 were prepared by milling presscake for 1 and 25 hours. The turbidity ratio of the dispersions having large particle size rapidly increased above 10$0^{\circ}C$, but that of metastable form decreased during cooling step. Whereas those of small particle size decreased as dyeing proceeded. It could be monitored that the particle size of dyes not adsorbed by polyester fiber were enlarged during dyeing process. The dyes with small particle size showed lower exhaustion value than larger ones at first, but eventually showed higher values above 13$0^{\circ}C$.

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