Abstract In this work, polymer nanocomposites based on poly(butylene 2,5-furan dicarboxylate) (PBF) and clay nano-inclusions were synthesized via the in-situ transesterification and polycondensation method. PBF is a biobased alipharomatic polyester that is expected to replace its fossil-based terephthalate homologue, poly(butylene terephthalate) (PBT), while aluminosilicate clays have already been used as reinforcing fillers for commercial polymers. In this context, a series of PBF based nanocomposites with the nanoclays Cloisite®-Na (MMT), Cloisite®-20A (MMT 20A) and Cloisite®-10A (MMT 10A) were synthesized for the first time and the effect of the nanoclays on the properties of PBF were investigated with various techniques including Infrared Spectroscopy (FTIR), Nuclear Resonance Spectroscopy (1H NMR), Wide Angle X-ray Diffraction (WAXD), Differential Scanning Calorimetry (DSC), Scanning Electron Microscopy (SEM), Broadband Dielectric Spectroscopy (BDS) and nanoindentation tests. The crystallization rates of the polymers were accelerated by the insertion of the nanofillers, which were intercalated by the polymer chains to a different extend depending on the functionalization molecule on the interlayer surfaces. Furthermore, the addition of the clays improved the mechanical properties of the prepared polymers that were studied both in the amorphous and the semicrystalline state. Finally, broadband dielectric spectroscopy (BDS) was employed to study polymer dynamics, namely the local β and segmental α relaxations, and construct the dielectric-calorimetric map. The most significant effects on molecular dynamics arose from the implementation of crystallization rather than by the fillers themselves.

中文翻译：

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基于聚（2,5-呋喃二甲酸丁二醇酯）的新型聚合物/粘土纳米复合材料的合成与表征

摘要 在这项工作中，通过原位酯交换和缩聚方法合成了基于聚（2,5-呋喃二甲酸丁二醇酯）（PBF）和粘土纳米包裹体的聚合物纳米复合材料。PBF 是一种生物基脂族聚酯，有望取代其基于化石的对苯二甲酸酯同系物聚对苯二甲酸丁二醇酯 (PBT)，而铝硅酸盐粘土已被用作商业聚合物的增强填料。在此背景下，首次合成了一系列含有纳米粘土 Cloisite®-Na (MMT)、Cloisite®-20A (MMT 20A) 和 Cloisite®-10A (MMT 10A) 的基于 PBF 的纳米复合材料，并研究了纳米粘土的作用使用各种技术研究了 PBF 的性质，包括红外光谱 (FTIR)、核共振光谱 (1H NMR)、广角 X 射线衍射 (WAXD)、差示扫描量热法 (DSC)、扫描电子显微镜 (SEM)、宽带介电光谱 (BDS) 和纳米压痕测试。聚合物的结晶速率通过纳米填料的插入而加速，纳米填料被聚合物链插入到不同的程度，这取决于层间表面上的官能化分子。此外，粘土的添加改善了制备的聚合物的机械性能，这些聚合物在无定形和半结晶状态下均进行了研究。最后，采用宽带介电光谱 (BDS) 研究聚合物动力学，即局部 β 和链段 α 弛豫，并构建介电量热图。