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Improvement of Migration Fastness of Perfluorocarbons-free Synthetic Suede by Chitosan Pretreatment

  • Textile Coloration and Finishing
  • Abbr : Text. Color. and Finish.
  • 2019, 31(4), pp.258-267
  • DOI : 10.5764/TCF.2019.31.4.258
  • Publisher : The Korean Society Of Dyers And Finishers
  • Research Area : Engineering > Fiber Engineering > Dyeing Engineering
  • Received : October 30, 2019
  • Accepted : December 20, 2019
  • Published : December 27, 2019

Hye Mi Lee 1 Ah Rong Kim 1 Dae Geun Kim 1

1DYETEC연구원

Accredited

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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