Manufacturing and study of the characterization of POT/MWCNT/PS films to use as gamma dosimeter

In this study, Poly(O-toluidine)/Multi-Walled Carbon Nanotube/Polystyrene (POT/MWCNT/PS) films were prepared by casting and irradiated with different doses of gamma rays (0, 3, 5 kGy) at room temperature to manufacture a polymer gamma ray dosimeter. The effect of these rays on the physical properties of the samples was investigated in terms of their structure, morphology, optical, and electrical conductivity. The effect of irradiation on the morphology of the prepared films and their crystal structure was explored by scanning electron microscopy and X-ray diffraction. The electrical conductivity of unirradiated POT.MWCNT/PS films increased from 1.89×10−8 S/cm to 5.61×10−8 S/cm after exposure to 5 kGy dose gamma irradiation. The absorbance and transmittance spectra of POT.MWCNT/PS films were recorded. An analysis of these spectra shows that the optical transitions are an allowed direct transition and the irradiation increases the value of the optical energy gap. The above influences on the physical properties of POT.MWCNT/PS films due to gamma rays make them a candidate for use as a gamma ray detector.