To study the thermal stability of ethylene/vinyl acetate/vinyl alcohol (EVA-OH) composite with filler particles, systematic thermogravimetric analysis (TGA) investigation was conducted in both nonisothermal and isothermal modes. The effect of polymer concentration on the aging behavior of EVA-OH was investigated in the nitroplasticizer (NP) environment. Fourier transform infrared spectroscopy was used to probe chemical structural changes in the EVA-OH polymer before and after thermal aging. The results suggest that filler addition accelerates the rate of NP exudation out of the EVA-OH composites and deteriorates the thermal stability of NP at moderate temperatures (up to 70°C). The degradation of NP, in turn, accelerates the degradation of EVA-OH polymer in its composite form through oxidation and hydrolysis indicating the importance of antioxidants in such phase blends.

中文翻译：

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填料基乙烯/醋酸乙烯酯/乙烯醇三元共聚物在硝基增塑剂氧化环境中的热稳定性

为了研究乙烯/醋酸乙烯酯/乙烯醇 (EVA-OH) 复合材料与填料颗粒的热稳定性，在非等温和等温模式下进行了系统热重分析 (TGA) 研究。在硝基增塑剂 (NP) 环境中研究了聚合物浓度对 EVA-OH 老化行为的影响。傅里叶变换红外光谱用于探测 EVA-OH 聚合物在热老化前后的化学结构变化。结果表明，填料的添加加速了 EVA-OH 复合材料中 NP 的渗出速率，并降低了 NP 在中等温度（高达 70°C）下的热稳定性。反过来，NP的退化，