The influence of electron-beam irradiation on some mechanical properties of commercial multilayer flexible packaging materials

Oliveira, Vítor; Ortiz, Angel Visentim; Mastro, Nélida L. del; Moura, Esperidiana A. B.

doi:10.1016/j.radphyschem.2009.03.041

Cited by 21 publications

(3 citation statements)

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“…Cross-linking and chain scissioning depend on the chemistry, structure, and morphology of the materials and chemical alterations that may reorient the chemical bonds directly inuence the physical properties of the polymers. 3,4 Therefore, treatment with EB radiation is a promising approach to control the modication of polymers' physical properties in order to use them in various applications. EB radiation has been efficiently applied in industry to promote cross-linking and chain scission in polymeric materials for use in various applications like insulation on wires, packaging, parcels etc.…”

Section: Introductionmentioning

confidence: 99%

Optical properties and ionic conductivity studies of an 8 MeV electron beam irradiated poly(vinylidene fluoride-co-hexafluoropropylene)/LiClO₄electrolyte film for opto-electronic applications

et al. 2018

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Section: Introductionmentioning

confidence: 99%

Optical properties and ionic conductivity studies of an 8 MeV electron beam irradiated poly(vinylidene fluoride-co-hexafluoropropylene)/LiClO₄electrolyte film for opto-electronic applications

et al. 2018

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“…With the growing interest in plastics recycling, it becomes clear that fundamental insights are required for the valorization of cross‐contaminated plastics, such as immiscible non‐polar/polar polymeric blends. One such blend is polypropylene (PP) with poly(ethylene terephthalate) (PET), which is prevalent in multilayer packaging 1 . A practice commonly proposed in literature as a recycling route is the use of compatibilizers 2 .…”

Section: Introductionmentioning

confidence: 99%

Onset critical strains as an effective parameter for compatibilizer efficiency in a polypropylene‐poly(ethylene terephthalate) blend

Kets

Delva

2021

J of Applied Polymer Sci

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The effectiveness of a compatibilizer is responsible for improved mechanical properties of immiscible blends. The enhanced interactions between the phases are assessed via critical plastic strain (onset of fine slip caused by local intra‐/interlamellar slip) and critical elastic strain (onset of fibrillation of crystalline skeleton). Polypropylene‐poly(ethylene terephthalate) (PP‐PET) blends were compatibilized with three maleic anhydride grafted compatibilizers with different backbones: PP, SEBS, and POE. Using this critical onset strain method, via free shrinkage experiments, allowed to identify the effect of PET on the matrix's deformation and also the different contributions of the compatibilizers to the deformation mechanisms. Results showed that PPgMAH promoted best PET's plastic deformation to the matrix, relative to the other compatibilizers. However, SEBSgMAH's elastomeric backbone provide better stress dissipation before onset of fibrillation compared to the binary blend and matrix. This method can be used as a way to assess the effectiveness of a compatibilizer in an immiscible blend.

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“…Polietileno de baixa densidade (LDPE) e polietileno linear de baixa densidade (LLDPE) são valorizados pela sua tenacidade e propriedades de selagem. Oliveira et al (2009) mostraram que a resistência à selagem do polímero multicamada PET/PP foi mais afetada pela irradiação do que para o polímero PET/LDPE/EVOH/LDPE. A perda da resistência à selagem do PET/PP em doses até 25 kGy foi em torno de 65-92% oito dias após a irradiação, e de 43-88% seis meses após a irradiação em doses de até 15 kGy.…”

Section: Análise Dos Resultados Obtidos Para Os Parâmetros Relacionadunclassified

Efeitos da radiação gama (cobalto-60) nas principais propriedades físicas e químicas de embalagens compostas por papel grau cirúrgico e filme plástico laminado, destinada à esterilização de produtos para saúde

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Gamma radiation is one of the technologies applied for the sterilization of packaging systems containing products for health. During sterilization process it is critical that the properties of packages are maintained. In this study two samples of commercial pouch packaging comprised of surgical grade paper on one side and the other side multilayer plastic film were irradiated with gamma rays. The following doses were applied 25 kGy (1,57 kGy/h) and 50 kGy (1,48 kGy/h). One packaging sample was paper formed by softwood fibers and multilayer plastic film based on poly(ethylene terephthalate) (PET)/polyethylene (PE). The second type of paper sample was made by a mixture of softwood and hardwood fibers and multilayer plastic film based on polyethylene terephthalate (ethylene) (PET)/polypropylene (PP). The effects of radiation on the physical and chemical properties of papers and multilayer plastic films, as well as the properties of the package were studied. The paper was the more radiation sensitive among the studied materials and radiation effects were more pronounced at brightness, pH, tearing resistance, bursting strength and tensile strength. Nonetheless, worst comparatively effects were noted on the sample made by a mixture of softwood and hardwood fibers. The porosity of paper was enhanced by 50 kGy. In the case of plastic films, radiation effects on tensile strength was the most pronounced property for both samples. In the case of the packaging the sealing resistance decreased with radiation. The effects observed for the treatment at 50 kGy were more pronounced when compared to 25 kGy. This last is the dose which is usually applied to sterilize health products. A dosimetry study was performed during irradiation at 25 kGy, 40 kGy and 50 kGy and its importance may be reported by the average dose variation 20 %.

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The influence of electron-beam irradiation on some mechanical properties of commercial multilayer flexible packaging materials

Cited by 21 publications

References 5 publications

Optical properties and ionic conductivity studies of an 8 MeV electron beam irradiated poly(vinylidene fluoride-co-hexafluoropropylene)/LiClO₄electrolyte film for opto-electronic applications

Optical properties and ionic conductivity studies of an 8 MeV electron beam irradiated poly(vinylidene fluoride-co-hexafluoropropylene)/LiClO₄electrolyte film for opto-electronic applications

Onset critical strains as an effective parameter for compatibilizer efficiency in a polypropylene‐poly(ethylene terephthalate) blend

Efeitos da radiação gama (cobalto-60) nas principais propriedades físicas e químicas de embalagens compostas por papel grau cirúrgico e filme plástico laminado, destinada à esterilização de produtos para saúde

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The influence of electron-beam irradiation on some mechanical properties of commercial multilayer flexible packaging materials

Cited by 21 publications

References 5 publications

Optical properties and ionic conductivity studies of an 8 MeV electron beam irradiated poly(vinylidene fluoride-co-hexafluoropropylene)/LiClO4electrolyte film for opto-electronic applications

Optical properties and ionic conductivity studies of an 8 MeV electron beam irradiated poly(vinylidene fluoride-co-hexafluoropropylene)/LiClO4electrolyte film for opto-electronic applications

Onset critical strains as an effective parameter for compatibilizer efficiency in a polypropylene‐poly(ethylene terephthalate) blend

Efeitos da radiação gama (cobalto-60) nas principais propriedades físicas e químicas de embalagens compostas por papel grau cirúrgico e filme plástico laminado, destinada à esterilização de produtos para saúde

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Optical properties and ionic conductivity studies of an 8 MeV electron beam irradiated poly(vinylidene fluoride-co-hexafluoropropylene)/LiClO₄electrolyte film for opto-electronic applications

Optical properties and ionic conductivity studies of an 8 MeV electron beam irradiated poly(vinylidene fluoride-co-hexafluoropropylene)/LiClO₄electrolyte film for opto-electronic applications