Effects of thermomigration on the washfastness of disperse dyes having different molecular size

Effects of chemical structure of disperse dyes applied to conventional and microdenier polyesters on the dyeing property and washfastness were studied. It was found that washfastness of dyed polyester fabric is closely related to the degree of thermomigration of disperse dye during heatsetting. The...

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Bibliographic Details
Published in:Fibers and polymers 2004-03, Vol.5 (1), p.39-43
Main Authors: Kim, Sung Dong, Kim, Min Jung, Lee, Byung Sun, Lee, Kwon Sun
Format: Article
Language:English
Subjects:
Disperse
Dispersion
Dyeing
Dyes
Fabrics
Fibers
Molecular structure
Polyester resins
Size effects
Thermomigration
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Summary:Effects of chemical structure of disperse dyes applied to conventional and microdenier polyesters on the dyeing property and washfastness were studied. It was found that washfastness of dyed polyester fabric is closely related to the degree of thermomigration of disperse dye during heatsetting. The bulky disperse dye, which was synthesized by substituting two acetoxy groups of C.I. Disperse Red 82 with two benzoxy groups, showed almost the same amount of absorbed dye by the microdenier polyester as C.I. Disperse Red 82, but the degree of thermomigration was low and subsequent washfastness was excellent. The high grade of washfastness of the bulky disperse dye might be caused by the increased dye-fiber interaction and the reduced mobility.
ISSN:1229-9197
1875-0052
DOI:10.1007/BF02875493