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Aspects of the photobleaching and photoyellowing of wool
Author(s) -
Collins Stephen,
Davidson R Stephen
Publication year - 1993
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.1478-4408.1993.tb01559.x
Subject(s) - photobleaching , irradiation , fluorescence , wool , chromophore , photochemistry , visible spectrum , laser , argon , chemistry , materials science , optics , optoelectronics , physics , organic chemistry , nuclear physics , composite material
The photobleaching of wool, using the 488 nm line of an argon ion laser and north light fluorescent lamps, in wet and dry states, has been studied. Destruction of the chromophores absorbing in the visible wavelength region was accompanied by a modest increase in UV‐absorbing chromophores. Use of north light lamps resulted in little change in the natural fluorescence, whereas irradiation with the 488 nm laser line caused a decrease. UV irradiation of wool using either the 351 nm line of the argon ion laser or UV fluorescent lamps led to extensive yellowing, manifested by an increase in both visible‐light‐ and UV‐absorbing chromophores, and this was generally accompanied by a marked increase in natural fluorescence. The wool yolk has a definite protective effect upon UV irradiation of wool but no effect was observed upon north light irradiation.