Atmosphere and dose effects on the SHI irradiation of atactic polystyrene

Ferry, M.; Cornaton, M.; Durand, D.; Esnouf, S.; Aymes-Chodur, Caroline; Ngono, Yvette

doi:10.1016/j.radphyschem.2023.111135

Radiation Physics and Chemistry

2023

DOI: 10.1016/j.radphyschem.2023.111135

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Atmosphere and dose effects on the SHI irradiation of atactic polystyrene

M. Ferry

M. Cornaton

D. Durand

et al.

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2024

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Research on the Stability and Response of Food Packaging Polystyrene Resin Materials to γ-ray Irradiation

Yan,

Cheng,

Ding

et al. 2024

ACS Omega

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Radiation stability of food packaging materials is the key to ensuring food quality. In this study, 60 Co γ-ray was selected to investigate the radiation resistance of food packaging polystyrene (PS) resin material, although the FTIR analysis showed that the intensity of several peaks decreased slightly. The gel permeation chromatography (GPC) results displayed that the value of peak molecular weight (Mp) of PS went from 2.68 × 10 5 g/mol down to 2.22 × 10 5 g/mol. Moreover, the residual mass (Res) of PS increased from 7.208 to 30.23%, indicating that the tendency of coking of PS was stronger after irradiation. In addition, the peak intensities of the three main pyrolysis products −CH 2 –, CH 4 , and CH 2 =CH 2 increased by more than 30% compared to unirradiated PS, and a large number of them were detected in the whole pyrolysis process. Moreover, mechanical property analysis finds that both breaking strength and elongation data increased before irradiation dose of 50 kGy, then, decreased sharply with further increase of irradiation dose. The theoretical bond order analysis confirmed that the tertiary carbon bond attaching the benzene ring had the lowest bond energy. This study can give helpful guidance when using PS for food packing materials.

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Research on the Stability and Response of Food Packaging Polystyrene Resin Materials to γ-ray Irradiation

Yan,

Cheng,

Ding

et al. 2024

ACS Omega

View full text Add to dashboard Cite

show abstract

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Atmosphere and dose effects on the SHI irradiation of atactic polystyrene

Cited by 1 publication

References 44 publications

Research on the Stability and Response of Food Packaging Polystyrene Resin Materials to γ-ray Irradiation

Research on the Stability and Response of Food Packaging Polystyrene Resin Materials to γ-ray Irradiation

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