Stabilizing effect of 1,1,5-trihydroperfluoropentanol on photochemical degradation of polycaproamide

The effect of fluorinated alcohols on the photochemical degradation of polycaproamide was studied. It was shown that, even when a small amount (0.035 wt %) of 1,1,5-trihydroperfluoropentanol is added, the rate of photodegradation of polyamide fibers decreases. Electron microscopic examination showed that, in the presence of the fluorinated alcohol, the test fibers are characterized by a reduced number of defects. The simultaneous introduction of microquantities of 1,1,5-trihydroperfluoropentanol and N,N-bis(2,2,6,6-tetramethyl-4-piperidinyl) 1,3-benzenedicarbamide is responsible for the synergistic photostabilizing effect.