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 language | English |
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Pages (from-to) | 147-152 |
Number of pages | 6 |
Journal | Fibers and Polymers |
Volume | 3 |
Issue number | 4 |
DOIs | |
State | Published - 2002 |
Keywords
- Direct dyes
- Lightfastness
- Metallization
- Mutagenicity
- Neutron activation