Fibers and Polymers

The Korean Fiber Society (한국섬유공학회)
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Copper Salts in the Post-metallization of Non-genotoxic Direct Dyes

  • Bae, Jin-Seok (Department of Textile Engineering, Chemistry and Science, North Carolina State University) ;
  • Freeman, Harold S. (Department of Textile Engineering, Chemistry and Science, North Carolina State University)
  • Published : 2002.12.01
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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.

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