Characterization of gamma irradiated pp/ldpe blend
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Artigo de evento
Date
2014
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Defect and Diffusion Forum
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1
Authors
Moori T.M.
Terence M.C.
Pereira N.C.
Faldini S.B.
De Miranda L.F.
Terence M.C.
Pereira N.C.
Faldini S.B.
De Miranda L.F.
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Abstract
This study analyzed nine polypropylene (PP) and low-density polyethylene (LDPE) blends where the mass concentrations of each sample were changed, proportionally. The aim was to investigate the tensile strength by means of these polymers best combination, before and after its exposal to gamma rays. The results showed that the 20/80 - PP/LDPE blend had a better performance concerning mechanical properties after irradiation, where the maximums tensile stress had an average increase of 30% in 30 and 50 kGy doses and 33% in the 200 kGy dose. On the other hand, it was verified that the higher blend's PP concentration, the higher its tensile strength will be (except for 100 kGy and 200 kGy doses which PP concentration over 70% can cause eventual degradation in the polymeric chains of the blend). © (2014) Trans Tech Publications, Switzerland.
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Keywords
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Low Density Polyethylene (LDPE) , Mass concentration , Polymeric chain