The effect of suspended wool on the photodecomposition of a model fluorescent brightener, disodium 4,4'-diacetamido stilbene-2,2-disulfonate in aqueous solutions has been studied. Low concentrations of suspended wool increase the rate of brightener photodecomposition, whereas higher wool concentrations retard the rate of brightener decomposition. Photo-oxidation of the brightener in solution or on wool substrate gives the same major photocleavage product, sodium 5-acetamido-2-formylbenxenesutfonale.
Alexander, P. , Hudson, R.F., and Earland, C., "Wool, Its Chemistry and Physics," 2nd Ed., New Jersey, Franklin Publishing Company, 1965, pp. 265-266.
2.
Graham, D.R. and Statham, K.W., The Photochemical Oxidation of Wool in the Presence of Fluorescent Compounds, J. Soc. Dyers Colourists72, 434-438 (1956).
3.
Gruen, L.C. and Inglis, A.S., Studies in Wool Yellowing. XXI: Further Studies on Wool Fabrics Treated with Fluorescent Brightening Agents and Thiourea Formaldehyde, Textile Res. J. 38, 509-517 (1968).
4.
Leaver, I.H. and Ramsay, G.C., Studies in Wool Yellowing. XXVI: Photoyellowing of Fluorescent-Brightened Wools-Wavelength Dependence and ESR Studies, Textile Res. J. 39, 722-729 (1969).
5.
Leaver, I.H. and Ramsay, G.C., Studies in Wool Yellowing. XXVII: The Role of Water in the Photoyellowing of Flourescent-Brightened Wool, Textile Res, J. 39, 730-733 (1969).
6.
Leaver, I.H. and Ramsay, G.C., Sensitized Photo-Oxidation of Wool and Silk by a Triazinylstilbene, Photochem. Photobiol , 9, 531-536 (1969).
7.
Porter, J.J. and Spears, S.B., Jr., The Photodecomposition of Basic Green 4, Textile Chemist Colorist2, 191-195 (1970).
8.
Savige, W.E. , Studies in Wool Yellowing. XVIII: Processes for Retardation of Sunlight Yellowing of Flourescent-Brightened Wool, Textile Res. J. 38 , 101-102 (1968
9.
). Seiber, R.P. and Needles, H.L., Photo-Oxidation of Disodium 4,4'-Diacetamidostilhene-2,2'-disulfonate , Chem. Commun . 209 (1972).
