Oxygen permeability (P), diffusivity (D) and solubility (S) properties are representative of gaseous diffusion in polymers and required for the understanding of polymer physics driven phenomena as well as the quantification of mass transport or polymer degradation processes when diffusion limited oxidation effects result in spatially dependent oxidation behavior. Precise P, D, S characterization data for O₂ in polymeric materials at elevated temperatures have not been reported due to instrumental challenges and competitive reactively driven oxygen loss (oxidation reactions), although estimations have been accomplished from indirect measurements of oxidation depths when analyzed with theoretical degradation models. This study offers an overview on experimental approaches which have been applied to the characterization of a range of thin polymer films. As an overview, the O₂ permeation features of three epoxy thermo-set materials, polyimides (Kapton and bismaleimides), and polypropylene for 25–140 °C were investigated with time-dependent flux measurements and yield permeation data which so far have not been available in the literature. Arrhenius plots of P for two epoxies (828/D230 and 828/D400) show the influence of the glass transition temperature, and intriguingly a transition originates mostly through noticeable changes in S but not D. Multiple material behaviors demonstrating the influence of reactive oxygen loss are discussed. Polymer oxidation chemistry will often interfere with physical permeation measurements at elevated temperatures, in conflict with perhaps the expectation for simple non-reactive O₂ transport. Misleading data may result unless the underlying reactive oxidative loss is considered and compensated for, or permeation data are compared at multiple O₂ partial pressures to validate non-reactive experimental conditions.

氧渗透率（P），扩散率（D）和溶解度（S）特性代表了聚合物中的气体扩散，是理解聚合物物理驱动现象以及定量分析扩散受限的氧化效应时传质或聚合物降解过程的必要条件导致空间依赖性的氧化行为。O _2的精确P，D，S表征数据由于存在仪器方面的挑战和竞争性的驱动性氧损失（氧化反应），因此尚未报道聚合物材料中高温下的氧化，尽管使用理论降解模型进行分析时，是通过间接测量氧化深度来完成估算的。这项研究概述了已应用于表征一系列聚合物薄膜的实验方法。总的来说，研究了三种环氧热固性材料（聚酰亚胺（Kapton和双马来酰亚胺）和聚丙烯）在25–140°C下的O ₂渗透特性，并通过时间相关的通量测量和屈服渗透率数据进行了研究，但到目前为止尚未发现。在文献中可用。P的阿累尼乌斯情节对于两种环氧树脂（828 / D230和828 / D400）而言，它们显示出玻璃化转变温度的影响，有趣的是，转变主要是由S的显着变化引起的，而不是D引起的。讨论了证明反应性氧损失影响的多种材料行为。聚合物氧化化学通常会干扰高温下的物理渗透率测量，这可能与对简单的非反应性O ₂传输的预期相抵触。除非考虑和补偿了潜在的反应性氧化损失，或者在多个O ₂分压下比较了渗透数据以验证非反应性实验条件，否则可能会产生误导性数据。