IRRADIATION OF WOOL FIBERS IN MIXTURES OF ORGANIC-SOLVENTS

The IR spectra of wool fibers gamma-irradiated in mixtures of two orga nic solvents were recorded. The analysis of the spectra showed that ir radiation of wool fibers in the presence of certain mixtures results i n the appearance of an absorption band at 1725 cm(-1) corresponding to the absorption of the carbonyl groups. The intensity of the COO- band at 1400 cm(-1) is influenced by the nature of the solvents and the co ncentration of each solvent in the mixture. This band disappears when the fibers are irradiated in the presence of ethyl alcohol. The intens ities of the absorption bands in the region 1000-1200 cm(-1) vary also according to the nature of the solvents. Furthermore, the absorbances of amide I and amide II bands were determined. It was found that the induced changes in the absorbances of these bands depend on the dipole moment of the solvents.