키토산 전처리를 통한 과불화탄소 무함유 합성 스웨이드의 이염성 견뢰도 향상
Improvement of Migration Fastness of Perfluorocarbons-free Synthetic Suede by Chitosan Pretreatment
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Synthetic suede without PFCs(perfluorinated compounds) are followed by subsequent high temperature treatment. But migration fastness of synthetic suede may be reduced due to sublimation of disperse dyes that results from the high temperature treatment. Therefore, in this study, chitosan treatment was used to improve the migration fastness before polyurethane dipping process. Polyester fiber was treated with sodium hydroxide aqueous solution before chitosan processing. This samples treated with a chitosan concentration upto 0.5% were dyed and coated with PUD(polyurethane dispersion). The migration fastness was most improved at 0.35%. application This is presumably due to the fact that the chitosan may increase the dye-binding capability through intermolecular hydrogen bonding.
Abstract
Synthetic suede without PFCs(perfluorinated compounds) are followed by subsequent high temperature treatment. But migration fastness of synthetic suede may be reduced due to sublimation of disperse dyes that results from the high temperature treatment. Therefore, in this study, chitosan treatment was used to improve the migration fastness before polyurethane dipping process. Polyester fiber was treated with sodium hydroxide aqueous solution before chitosan processing. This samples treated with a chitosan concentration upto 0.5% were dyed and coated with PUD(polyurethane dispersion). The migration fastness was most improved at 0.35%. application This is presumably due to the fact that the chitosan may increase the dye-binding capability through intermolecular hydrogen bonding.
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