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

ABSTRACT: Radiation stability of food packaging materials is the key to ensuring food quality. In this study, ⁶⁰Co 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 × 10⁵ g/mol down to 2.22 × 10⁵ 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 -CH₂-, CH₄, and CH₂=CH₂ increased by

SUBMITTER: Yan J 

PROVIDER: S-EPMC11411651 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature