EDVALDO LUIS ROSSINI

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Preparacao da blenda polimerica PET/PP/PE/EVA e estudo das modificacoes provocadas pela radiacao ionizante: caracterizacao por propriedades morfologicas
2005 - ROSSINI, E.L.; PITARELI, G.; WIEBECK, H.; ANDRADE e SILVA, L.G.
Study of electron beam irradiation effects on morphologic properties of the PET/PP/PE/EVA polymeric blend
2009 - ROSSINI, EDVALDO L.; WIEBECK, HELIO; ANDRADE e SILVA, LEONARDO G.
Amidst the pollutants, plastics and especially the “PET bottles” packaging type, which comprise of poly(ethylene terephthalate) (PET), polypropylene (PP), polyethylene (PE) and poly[ethylene-co-(vinyl acetate)] (EVA) have been causing big damage to the environment. In this work, the polymeric blend PET/PP/PE/EVA was obtained by mechanical recycling “PET bottles” after consumption, with the objective of finding a solution for this environmental problem. It was also studied the different ionizing radiation dose effects (25, 50, 75, 100, 150, 200, 300, 400 and 500 kGy) on the blend properties using an electron beam accelerator. The morphologic properties of the non-irradiated and irradiated polymeric blend were evaluated by the Light Microscopy (LM) and Scanning Electron Microscopy (SEM). The analysis of the results appeared to be a not mixing and compatible blend. The use of the ionizing radiation improved the homogeneity of the blend. These modifications have been randomized and irregular, depending directly on the dose of applied radiation.