Copper salts in the post-metallization of non-genotoxic direct dyes

Jin Seok Bae, Harold S. Freeman

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Copper (II) salts are used as metallizing agents in the synthesis of new non-genotoxic direct dyes for cotton. Specifically, cotton fabric is dyed with non-genotoxic disazo direct dyes and then treated with copper salts. The complexes are characterized by neutron activation analysis, absorption spectrometry and standard Salmonella mammalian mutagenicity assay, and the after-treated fabrics are evaluated for lightfastness and washfastness. Direct dyes possessing ortho-propoxy and ortho'-hydroxy substituted systems formed the corresponding nonmutagenic 1:2 dye:metal complex and undergo significant improvement in lightfastness following metallization.

Original languageEnglish
Pages (from-to)147-152
Number of pages6
JournalFibers and Polymers
Volume3
Issue number4
DOIs
StatePublished - 2002

Keywords

  • Direct dyes
  • Lightfastness
  • Metallization
  • Mutagenicity
  • Neutron activation

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