The effect of gamma radiation on the properties of polypropylene blends with styrene–butadiene–styrene copolymers

Perera, R.; Albano, Carmen; Gonzalez, Jorge; Silva, Pedro; Ichazo, Miren

doi:10.1016/j.polymdegradstab.2003.09.020

Cited by 69 publications

(39 citation statements)

References 17 publications

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“…PE and PP [9] are also known to have a different resistance to radiooxidation: chains scission by radio-oxidation of pure PP [10] is easier because the hydrogen is easily extracted from the tertiary carbon [11,12]. Regarding the ENB units, which are often chosen as the diene units, a larger amount of oxidized species has been detected after the radio-oxidation of an EPDM than after that of an Ethylene Propylene Rubber (EPR) with the same PE/PP ratio [13].…”

Section: Introductionmentioning

confidence: 99%

Influence of PE/PP ratio and ENB content on the degradation kinetics of γ-irradiated EPDM

Almeida

Chazeau

Vigier

et al. 2014

Polymer Degradation and Stability

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Section: Introductionmentioning

confidence: 99%

Influence of PE/PP ratio and ENB content on the degradation kinetics of γ-irradiated EPDM

Almeida

Chazeau

Vigier

et al. 2014

Polymer Degradation and Stability

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“…Multiple endotherms are observed in a wide variety of semicrystalline polymers. This situation (Perera et al, 2004).…”

Section: Differential Scanning Calorimetry (Dsc)mentioning

confidence: 97%

Design of modified plastic surfaces for antimicrobial applications: Impact of ionizing radiation on the physical and mechanical properties of polypropylene

Riquet

Delattre

Vitrac

et al. 2013

Radiation Physics and Chemistry

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. Surface modification of polypropylene (PP) sheets was carried out by radiation induced graft polymerization of hydrophilic functional molecules such as N,N-dimethylacrylamide (DMA) and [2-methacryloyloxy)ethyl] trimethylammonium chloride, which is a quaternary ammonium salt (QAS). Polypropylene sheets were activated prior to the grafting reaction by using electron beam radiation. The changes in morphology, crystallinity and tensile parameters like deformation and stress at yield and deformation at break of PP after irradiation were investigated. The results showed that a minor crystalline reorganization takes place during the irradiation of PP at 100 kGy.The grafting has been observed to be strongly dependent on the monomer dilution in the reaction medium. After grafting of QAS (40%) and DMA (20%) it was possible to develop highly hydrophilic surfaces (water contact angle comprised between 30 and 411). The surfaces of virgin, irradiated and grafted PP were studied using polarized optical microscopy (POM) and scanning electron microscopy (SEM). Spherical particles (i.e. polystyrene or silica beads) adhering to the modified samples were studied according to the surface parameters. Adhesion tests confirmed the strong influence of substrate type (mainly hydrophilicity and roughness) and to a lesser extent underlined the role of electrostatic interactions for the design of plastic surfaces for antimicrobial applications.

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“…Multiple endotherms can be observed in a wide variety of semicrystalline polymers. This situation may arise from segregation effects linked to molecular weight, among other parameters (Perera, Albano, Gozalez, Silva, & Ichazo, 2004).…”

Section: Structural Variations Induced By Different Physical Treatmentsmentioning

confidence: 99%

The consequences of physical post-treatments (microwave and electron-beam) on food/packaging interactions: A physicochemical and toxicological approach

Riquet

Breysse²,

Dahbi

et al. 2016

Food Chemistry

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a b s t r a c tThe safety of microwave and electron-beam treatments has been demonstrated, in regards to the formation of reaction products that could endanger human health. An integrated approach was used combining the potential toxicity of all the substances likely to migrate to their chemical characterizations. This approach was applied to polypropylene (PP) films prepared with a selection of additives. Components were identified by liquid and gas chromatography using a mass selective detector system. Their potential toxicity was assessed using three in vitro short-term bioassays and their migrations were carried out using a standards-based approach. After the electron-beam treatment some additives decomposed and there was a significant increase in the polyolefin oligomeric saturated hydrocarbons concentration. PP prepared with Irgafos 168 led to a significantly strong cytotoxic effect and PP prepared with Irganox 1076 induced a dose-dependant estrogenic effect in vitro. Migration values were low and below the detection limit of the analytical method applied.

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The effect of gamma radiation on the properties of polypropylene blends with styrene–butadiene–styrene copolymers

Cited by 69 publications

References 17 publications

Influence of PE/PP ratio and ENB content on the degradation kinetics of γ-irradiated EPDM

Influence of PE/PP ratio and ENB content on the degradation kinetics of γ-irradiated EPDM

Design of modified plastic surfaces for antimicrobial applications: Impact of ionizing radiation on the physical and mechanical properties of polypropylene

The consequences of physical post-treatments (microwave and electron-beam) on food/packaging interactions: A physicochemical and toxicological approach

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