Abstract Polyamide66/maleated polypropylene/treated nanoclay nanocomposites (PA66/PP) containing maleic anhydride-grafted polypropylene (PP-g-MAH) were prepared by melt mixing and exposed to hygrothermal aging at three different temperatures, that is, 23, 60, and 90 °C. The analysis was focused on the water diffusion kinetics and physical changes induced by the hygrothermal degradation. The water absorption kinetics of the PA66/PP/nanoclay nanocomposites at immersion temperature of 23 and 60 °C conforms to Fick’s law. The equilibrium water absorption (Mm) and diffusion coefficient (D) values are dependent on the nanoclay content and immersion temperatures. For all investigated temperatures, the diffusion coefficient was found to decrease as function of nanoclay loading. A relationship between temperature and diffusion coefficient was also established. Graphical Abstract

中文翻译：

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聚酰胺66/马来化聚丙烯/纳米粘土纳米复合材料的吸水和湿热老化行为

摘要 通过熔融混合制备了含有马来酸酐接枝聚丙烯 (PP-g-MAH) 的聚酰胺 66/马来化聚丙烯/处理过的纳米粘土纳米复合材料 (PA66/PP)，并在三种不同温度下进行湿热老化，即 23、60 和90℃。分析的重点是湿热降解引起的水扩散动力学和物理变化。PA66/PP/纳米粘土纳米复合材料在23°C和60°C的浸渍温度下的吸水动力学符合菲克定律。平衡吸水率 (Mm) 和扩散系数 (D) 值取决于纳米粘土含量和浸渍温度。对于所有研究的温度，发现扩散系数作为纳米粘土负载的函数而降低。还建立了温度和扩散系数之间的关系。图形概要