ORTIZ, A.V.MOURA, E.A.B.COELHO, A.C.V.2014-11-172014-11-182015-04-012014-11-172014-11-182015-04-01ORTIZ, 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. <b>Anais...</b> Disponível em: http://repositorio.ipen.br/handle/123456789/17665.http://repositorio.ipen.br/handle/123456789/17665Packaging 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.openAccesscalorimetrychemical radiation effectscross-linkingelectron beamsexperimental dataphysical radiation effectspolyolefinsradiation dosestensile propertiesTexto completo de eventohttps://orcid.org/0000-0003-3546-1643