Using maghnite as an inorganic reinforcement, polyamide-6-based nanocomposites (PA6/Mag-CTA) have been synthesized. Maghnite is a type of laminar clay, which is distinguished by a significantly higher SiO2/Al2O3 ratio than other clays in the world. It is likely that the interfacial cations of maghnite form active sites during the reaction, and thus give it a catalytic behaviour. This work focuses on the preparation and characterization of polyamide-6/organic clay nanocomposites. The effect of the nature of organo-modified clay, and the preparation method have been studied to assess their structural, morphological and thermal properties, as well as their mechanical properties. Diverses compositions de PA6-Mag-CTA ont été élaborées en intégrant 1, 3, 5 et 7% de Mag-CTA. The formation of polyamide-6 has been confirmed by X-ray diffraction (XRD), spectroscopy (IR), thermogravimetric analysis (TGA), scanning and transmission electron microscopy (TEM,SEM) , atomic force microscopy (AFM). The results obtained provide evidence of intercalation of salt molecules within the clay layers, as well as good interaction with the polymer, showing the presence of intercalated and exfoliated structures. The nanocomposites show better thermal stability compared to virgin polyamide-6, which is examined by thermogravimetric analysis (TGA). An evaluation of the mechanical properties of the nanocomposites is carried out as a function of clay loading and PA6 matrix type. The Young's modulus and yield strength are measured in order to define the mechanical behaviour. PA6 filled with 5% Maghnite has better mechanical performance; this is due to the dispersed state of the Mag-CTA in the PA6 matrix. The improvement of the efficiency of the process adequate to the retention of the maximum of toxic elements and the effects of the initial pH of a solution and the contact time on the adsorption efficiency are studied.

中文翻译：

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聚酰胺 6 的合成：表征及其在粘土去除重金属中的应用

使用菱镁矿作为无机增强材料，合成了基于聚酰胺 6 的纳米复合材料 (PA6/Mag-CTA)。Maghnite 是一种层状粘土，其特点是 SiO2/Al2O3 比明显高于世界上其他粘土。菱镁矿的界面阳离子很可能在反应过程中形成活性位点，从而使其具有催化行为。这项工作的重点是聚酰胺6/有机粘土纳米复合材料的制备和表征。已经研究了有机改性粘土的性质和制备方法的影响，以评估它们的结构、形态和热性能，以及它们的机械性能。多种成分 de PA6-Mag-CTA ont été élaborées en intégrant 1, 3, 5 et 7% de Mag-CTA。X射线衍射（XRD）证实了聚酰胺6的形成，光谱学（IR），热重分析（TGA），扫描和透射电子显微镜（TEM，SEM），原子力显微镜（AFM）。获得的结果提供了盐分子在粘土层内插入的证据，以及与聚合物的良好相互作用，表明存在插入和剥离结构。与通过热重分析 (TGA) 检测的原始聚酰胺 6 相比，纳米复合材料显示出更好的热稳定性。对纳米复合材料的机械性能进行评估，作为粘土负载和 PA6 基质类型的函数。测量杨氏模量和屈服强度以定义机械行为。填充5% Maghnite的PA6具有更好的机械性能；这是由于 Mag-CTA 在 PA6 基质中的分散状态。