抄録
We dyed cellulose and nylon films with onionskin extraction, quercetin and rutin. Then we measured their absorption spectra and compared them. We also evaluated their ultraviolet protection effect on nylon films which were dyed well. It was found that the absorption spectra of quercetin and rutin solution had absorption maxima (λmax ) at about 370, 260 and 200nm. The absorption spectrum of onionskin extraction had λmax at about 300nm, as well as at about 370, 260 and 200nm. In addition, spectrum of onionskin extraction had weak absorption at more than 410nm. It was similar to the absorption spectra of dyed nylon films. Concerning the ultraviolet protection effects, nylon films dyed with quercetin showed UPF50+ when the amount of dye uptake was more than 0.05mol/kg. On the other hand, nylon films dyed with onionskin extraction showed UPF50+ when the estimated uptake assumed as quercetin was more than 0.015mol/kg. In conclusion, nylon films dyed with onionskin extraction showed higher ultraviolet protection effects (UPF values) than those dyed with quercetin.
