Characterization of semiconductor polymers for use in gamma radiation sensors. / Caracterização de polímeros semicondutores para o uso em sensores de radiação gama.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

This work aims the investigation of the optical properties of luminescent polymeric systems when submitted to different gamma radiation doses. Solutions of poly[2-methoxi-5-(2etil-hexiloxi)-p-phenilenevinilene] - MEH-PPV in chloroform were prepared. From those solutions, thin film layers of MEH-PPV were deposited on glass substrates. The polymer solutions and the thin-film samples of MEHPPV had their properties investigated by ultraviolet-visible (UV-Vis) absorption spectroscopy. The thin-film prepared samples were, additionally, investigated by InfraRed Fourier Transform (FTIR) spectroscopy and HPSEC chromatography. The experimental results were investigated to elucidate the radiation effects on the optical properties of these polymeric systems. From the experimental results, the feasibility of using this material as active element in gamma radiation dosimeters was investigated. The research was conducted aiming the low dose gamma radiation (<1 kGy) specifically for application in the sterilization treatment of blood bags (~ 25 Gy) and high gamma radiation doses (up to 25 kGy) as used for the sterilization of medical and hospital supplies.

ASSUNTO(S)

polímeros (materiais) dosimeters fabrication process electronic devices processos de fabricação dispositivos eletrônicos dosímetros polymers (materials)

ACESSO AO ARTIGO

Documentos Relacionados