Abstract
In the present work, the effect of different doses of gamma rays ranging from 50 to 500 kGy on the transmission spectra and the tristimulus transmittance as well as the absorption coefficient in the range 400–700 nm of poly(vinyl chloride) (PVC) were studied by the optical transmission spectra. Variation in the group coordination in the near infrared region (700–3000 nm) were also studied. The data indicated that measurable and remarkable changes in the transmittance of the irradiated samples, as well as decrease in the tristimulus transmittance values, as compared to the unirradiated PVC sample were detected. Moreover, the irradiated samples acquire various colors depending on the radiation doses. Linear empirical formulae are estimated to determine gamma doses from the values of CIE translucency and the absorption coefficients of PVC at 550 and 650 μm.
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