The present study introduces the properties of three thermo-responsive shape memory polymer nanocomposites (SMPCs), viz. SMPC–NiO (SMP with nickel oxide), SMPC-Fe₂O₃ (SMP with iron oxide), and SMPC-Fe₂NiO₄ (SMP with iron nickel oxide) along with the neat SMP blend. Styrene-Butadiene rubber and poly ε-caprolactone (PCL) polymer are the vital part, which forms the backbone of polymer-elastomer blend matrix. This study helps to understand the effect and influence of these metal oxide nanofillers' integrated blend on their different inbuilt properties. The tensile test and dynamic mechanical analysis studies confirmed that SMPC-Fe₂NiO₄ holds a large elastic modulus value and very rigid compared to other SMPCs. Thermal decomposition studies using differential scanning calorimetry, thermogravimetric (TG) analysis, and TG-gas chromatography and mass spectrometry results show that the nanocomposites undergoes a two-stage decomposition process. The shape memory test reveals that the time taken for temporary shape recovery is high for SMPC-Fe₂NiO₄ because of its rigid nature and low for SMPC-Fe₂O₃. The results revealed that, from this exploratory study, the integration of metal oxide nanopowder fillers, especially Fe₂O₃ with neat SMP, showed better properties.

中文翻译：

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热响应聚己内酯基聚合物纳米复合材料中的纳米金属氧化物填料：对热机械和形状记忆性能的影响

本研究介绍了三种热响应形状记忆聚合物纳米复合材料 (SMPC) 的特性，即。SMPC-NiO（含氧化镍的 SMP）、SMPC-Fe ₂ O ₃（含氧化铁的 SMP）和 SMPC-Fe ₂ NiO ₄（含氧化铁镍的 SMP）以及纯 SMP 混合物。苯乙烯-丁二烯橡胶和聚ε-己内酯（PCL）聚合物是至关重要的部分，它们构成了聚合物-弹性体共混基质的主链。这项研究有助于了解这些金属氧化物纳米填料的综合混合物对其不同内在特性的影响。拉伸试验和动态力学分析研究证实，SMPC-Fe ₂ NiO ₄与其他 SMPC 相比，它具有较大的弹性模量值并且非常坚固。使用差示扫描量热法、热重 (TG) 分析和 TG 气相色谱法和质谱法结果进行的热分解研究表明，纳米复合材料经历了两阶段分解过程。形状记忆测试表明，由于 SMPC-Fe ₂ NiO ₄的刚性性质，临时形状恢复所需的时间较长，而 SMPC-Fe ₂ O _{3 的}时间较短。结果表明，从这项探索性研究中，金属氧化物纳米粉末填料，尤其是 Fe ₂ O ₃与纯 SMP的整合显示出更好的性能。