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Studies on Aminoanthraquinone Compounds VI—Photochemistry of N‐Methyl Derivatives on Polymer Films
Author(s) -
EGERTON G. S.,
ASSAAD N. E. N.
Publication year - 1967
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.1478-4408.1967.tb02751.x
Subject(s) - polymer , nitrogen , photochemistry , nylon 6 , ultraviolet radiation , cellulose acetate , ultraviolet , chemistry , radiation , degradation (telecommunications) , polymer chemistry , cellulose , materials science , organic chemistry , optics , optoelectronics , radiochemistry , telecommunications , physics , computer science
The effect of ( a ) short‐wave ultraviolet radiation (mainly 253‐7 mμ) and ( b ) near‐ultraviolet and visible radiation on polymer films dyed with the two disperse dyes, 1‐methylaminoanthraquinone and 1,4‐bismethylaminoanthraquinone, has been studied. Dyes on nylon films undergo reduction when exposed in dry nitrogen to 253‐7‐mμ radiation. The effect of near‐ultraviolet and visible radiation is different; in dry nitrogen, 1‐methylaminoanthraquinone on N ‐methoxymethylnylon film is reduced to the same extent as with 253‐7‐mμ radiation, but on other nylon films (nylon 6, nylon 6.6, and nylon 11) the reduction observed with this dye is much smaller. There is no evidence of reduction of 1,4‐bismethylaminoanthraquinone on any of the nylon films. On cellulose acetate film, neither dye is reduced on exposure in dry nitrogen, by either source of radiation. The significance of these results in relation to the photo‐sensitised degradation of textile fibres is discussed.

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