Abstract: A study on the migration behavior of the reactive disperse dyes containing β-hydroxyethyl sulphonyl sulphuric ester group at different stages of dyeing and thermofixation on the polyester-cotton blend was made. The sublimation and vapor-phase transport of the dyes during thermofixation were examined. It was concluded that thermofixation conditions affect the dye distribution between cotton and polyester in the blend. The relationship between the distribution and the molecular structure of the dyes was examined. A dyeing mechanism of reactive disperse dyes for polyester-cotton blend was suggested.

摘要： A study on the migration behavior of the reactive disperse dyes containing β-hydroxyethyl sulphonyl sulphuric ester group at different stages of dyeing and thermofixation on the polyester-cotton blend was made. The sublimation and vapor-phase transport of the dyes during thermofixation were examined. It was concluded that thermofixation conditions affect the dye distribution between cotton and polyester in the blend. The relationship between the distribution and the molecular structure of the dyes was examined. A dyeing mechanism of reactive disperse dyes for polyester-cotton blend was suggested.