Evaluation of mechanical properties and DSC study of commercial multilayer PA/PE film treated with e-beam radiation
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2005
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INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; ENCONTRO NACIONAL DE APLICACOES NUCLEARES, 7th
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Packaging materials have been widely processed by ionizing radiation in order to improve their chemical and
physical properties and also for sterilization purposes. Basically, flexible packaging manufacturers apply
specific radiation doses to promote cross-linking and scission of the polymeric chains and thus obtain
alterations in certain properties of the material. While enhancing a specific property, significant losses may
result in others. In this study, we examined the effects of E-beam radiation on a commercial multilayer
PA6/LDPE based film, irradiated with doses up to 127 kGy. Food producers mostly use this structure as a
thermoforming bottom web for processed meat products. Two weeks after irradiation, tensile strength and
elongation of the film were analyzed. Both mechanical properties were again analyzed 18 months after
irradiation took place. Significant changes of mechanical properties were observed specially 18 months after
irradiation. Once cross-linking and scission are able to affect the material crystalline arrangement and
consequently cause properties changes, a DSC ( Differential Scanning Calorimetry) study was carried out for
doses up to 130 kGy in order to verify such changes.
Como referenciar
ORTIZ, A.V.; MOURA, E.A.B.; COELHO, A.C.V. Evaluation of mechanical properties and DSC study of commercial multilayer PA/PE film treated with e-beam radiation. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; ENCONTRO NACIONAL DE APLICACOES NUCLEARES, 7th, ago. 28 - set. 2, 2005, Santos, SP. Anais... Disponível em: http://repositorio.ipen.br/handle/123456789/17665. Acesso em: 19 Feb 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.