This paper presents the appraisal on the stabilization effects of some natural antioxidants, NAO (kelp, quercetin and rosemary extract) added in ethylene-propylene copolymer (EPR) subjected to an accelerated oxidative degradation initiated by γ-irradiation. The improvement contribution of polyhedral oligomeric silsesquioxane (POSS) in the coupling additives is also investigated. The applied experimental procedures (isothermal and nonisothermal chemiluminescence) allow the kinetic characterization of the protection activities initiated by their peculiar antioxidative interactions. The stabilization efficiencies are obtained by the modifications of the degradation parameters: oxidation induction time and onset oxidation temperature by means of their significant adjustments that demonstrate the material strength improvement. The amelioration of the evaluated thermal behavior is obtained by the presence of 1 wt% studied additives and POSS, which control the extended life of polymer packaging. The material durabilities expressed by the activation energies required by the modified EPR formulations for stability promotion are calculated. Our study reveals some ecological solutions for the manufacture of high performance materials available for packaging purposes, through which the modifications of EPR by quercetin and quercetin/POSS compounds provide the most efficient solution.

中文翻译：

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通过天然抗氧化剂/POSS 对包装材料对 EPR 进行受控降解


本文对添加在乙烯-丙烯共聚物 （EPR） 中的一些天然抗氧化剂 NAO（海带、槲皮素和迷迭香提取物）在γ照射引发的加速氧化降解下的稳定效果进行了评价。还研究了多面体低聚倍半硅氧烷 （POSS） 在偶联添加剂中的改进贡献。应用的实验程序（等温和非等温化学发光）允许对其特殊的抗氧化相互作用启动的保护活性进行动力学表征。稳定化效率是通过修改降解参数获得的：氧化诱导时间和起始氧化温度，通过它们的显着调整来证明材料强度的提高。通过存在 1 wt% 的研究添加剂和 POSS 来改善评估的热行为，它们控制聚合物包装的延长寿命。计算了改性 EPR 配方促进稳定性所需的活化能所表示的材料耐久性。我们的研究揭示了一些用于制造可用于包装目的的高性能材料的生态解决方案，通过槲皮素和槲皮素/POSS 化合物对 EPR 的修饰提供了最有效的解决方案。