Novel nanocomposite films based on amylose (AM) and Fe3+–montmorillonite (Fe3+–MMT) in the matrix of poly(vinyl pyrrolidone) (PVP) were fabricated using a solution casting method. X-ray diffraction indicated that an ion exchange process occurred between Fe3+–MMT and PVP/AM. Thermogravimetric analysis and differential scanning calorimetry results hinted to PVP/AM films forming a more stable network through the dispersion of Fe3+ cations. An increase in the loading of Fe3+–MMT improved the hydrophilic properties of PVP/AM films, which lead to the high degree of resistance against the water absorption. Mechanical properties of PVP/AM films influenced by the uniform dispersion of Fe3+–MMT in the polymer network established strong covalent interactions between PVP/AM and Fe3+–MMT. This interaction not only improved the mechanical properties of the films, but also enhanced the thermal stability of them through the facilitation of the MMT dispersion within the polymer matrix.

中文翻译：

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Fe3+–MMT 纳米复合材料的含量对 PVP/直链淀粉薄膜的热、机械和防水性能的影响

使用溶液浇铸法在聚乙烯吡咯烷酮 (PVP) 的基质中制备了基于直链淀粉 (AM) 和 Fe3+–蒙脱石 (Fe3+–MMT) 的新型纳米复合薄膜。X 射线衍射表明 Fe3+-MMT 和 PVP/AM 之间发生了离子交换过程。热重分析和差示扫描量热法结果表明 PVP/AM 薄膜通过 Fe3+ 阳离子的分散形成了更稳定的网络。Fe3+-MMT 负载量的增加改善了 PVP/AM 薄膜的亲水性能，从而导致高度的抗吸水性能。PVP/AM 薄膜的机械性能受 Fe3+-MMT 在聚合物网络中均匀分散的影响，在 PVP/AM 和 Fe3+-MMT 之间建立了强共价相互作用。