Influence of electron beam irradiation on the mechanical properties of pbat/pla polymeric blend
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Brazilian Journal of Development
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The aim of this research was to evaluate the changes in the mechanical properties of poly(butylene adipate co-terephthalate)/poly(lactic acid) (PBAT/PLA) polymeric blend after the radiation process at different radiation doses. The irradiation was performed in an electron beam accelerator, with 1.5 MeV of energy and 25 mA electric current. The samples were irradiated with doses of 5, 10, 15, 25, 50, 65 and 80 kGy. Both irradiated and non-irradiated samples were characterized by Izod pendulum impact resistance and tensile strength at rupture. The results showed an increase of 44% in relation to Izod impact resistance at a dose of 65 kGy. However, the module of elasticity decreased 56% and tensile strength at rupture decreased 55% at the same radiation dose. In relation to elongation, significant alterations caused by electron beam irradiation was not observed. Therefore, it can be concluded that irradiated blends could be used to make environmentally friendly products, which could absorb impact energy.
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MUNHOZ, PEDRO M.; NASCIMENTO, FERNANDO C.; SILVA, LEONARDO G. de A. e; HARADA, JULIO; CALVO, WILSON A.P. Influence of electron beam irradiation on the mechanical properties of pbat/pla polymeric blend. Brazilian Journal of Development, v. 7, n. 8, p. 79528-79537, 2021. DOI: 10.34117/bjdv7n8-252. Disponível em: http://repositorio.ipen.br/handle/123456789/32516. Acesso em: 30 Dec 2025.
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