The results of irradiations of brightened and unbrightened wools in the wavelength range 300–600 nm show that the brightener accelerates both yellowing and free radical formation in the region where maximum excitation of fluorescence occurs (350–410 nm). Radical-decay studies have enabled comparisons of the radicals produced at 310 and 365 nm to be made.
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. LennoxF. G.KingM. G., Studies in Wool Yellowing. Part XXIII: UV Yellowing and Blue-Light Bleaching of Different Wools, Textile Res. J.38, 754–761 (1968).
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