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Fading of azo reactive dyes by perspiration and light
Author(s) -
Imada Kunihiko,
Harada Naoki,
Takagishi Toru
Publication year - 1994
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1994.tb01648.x
Subject(s) - perspiration , dyeing , chromophore , photochemistry , reactive dye , chemistry , materials science , organic chemistry , composite material
The fastness of azo reactive dyes on cellulose in a combined perspiration and light test was investigated, and compared with the results obtained in a conventional light fastness test. Whereas reactive dyes containing an H‐or K‐acid azo chromophore performed better in the conventional light fastness test, reactive dyes of the J‐or γ‐acid type exhibited a higher fastness in the combined test. The results suggest that testing under combined perspiration and light conditions involves a photoreduction mechanism, but a photo‐oxidation mechanism operates when dyed fabrics fade under light only.