Study of Optical Absorption property of the composite Polypropylene/Yellow beryl submitted to several doses of gamma-radiation.

Abstract

Yellow Beryl was obtained from Teófilolo Othoni, state of Minas Gerais, and added into a matrix of Polipropileno (PP) made by Braskem. Here we have investigated the property of optical absorption (OA) of this composite submitted to various doses of gamma-radiation. We have almost no works on this type of composite (polymers/beryl) so far. The property of OA of the composite has been measured in the NIR (Near Infrared) range before and after irradiation. Have been used five different doses of gamma-radiation (1, 3, 5, 7 and 10 kGy) and different rates of fraction of beryl (1%, 10%, 30%, 50%) with purpose to detect any possible change on its spectra.