Polymeric mixing and ultrasonic dispersion method as a green, fast, effective, and inexpensive technique was utilized to prepare epoxy/polyurethane/zinc manganite nanoparticles (EP/PU/ZnMn2O4 NPs) nanocomposites. The ZnMn2O4 NPs and PU were used for the optimization of mechanical properties of EP resin. Response surface methodology (RSM) coupled with central composite design (CCD) was employed to obtain suitable mathematical models as function of physico- and thermomechanical factors. The weight fractions of PU and ZnMn2O4 NPs were chosen as the independent variables, and the effect of these variables on the mechanical properties of the EP resin was investigated. The tensile test showed that the addition of the PU and ZnMn2O4 NPs in the polymer matrix improved the mechanical properties. The dynamic mechanical analysis results showed that the storage modulus and the glass transition temperatures of the nanocomposites increased and decreased, respectively. The optimum values of PU and ZnMn2O4 NPs contents for good mechanical properties were determined as 0.73 weight percentage (wt%) and 0.15 wt% ratio to EP resin, respectively. The antibacterial properties of the optimum sample were also investigated, and the results showed that, with the addition of the NPs, the antibacterial performance of EP/PU increased. The X-ray diffraction, Fourier-transform infrared, scanning electron microscopy/energy-dispersive X-ray analysis, diffuse reflectance spectroscopy (DRS), and vibrating sampler magnetmeter analyses were also applied to study the chemical and magnetic properties of the optimized nanocomposite samples.

中文翻译：

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超声辅助快速制备三相纳米复合材料：锰酸锌纳米颗粒和聚氨酯对聚合物基复合材料热机械、物理化学和抗菌性能的影响

聚合物混合和超声分散法作为一种绿色、快速、有效且廉价的技术被用于制备环氧树脂/聚氨酯/锌锰纳米颗粒（EP/PU/ZnMn2O4 NPs）纳米复合材料。ZnMn2O4 NPs 和PU 用于优化EP 树脂的机械性能。响应面方法 (RSM) 与中心复合设计 (CCD) 相结合，用于获得合适的数学模型作为物理和热机械因素的函数。选择 PU 和 ZnMn2O4 NPs 的重量分数作为自变量，研究这些变量对 EP 树脂机械性能的影响。拉伸试验表明，在聚合物基体中加入 PU 和 ZnMn2O4 NPs 提高了力学性能。动态力学分析结果表明，纳米复合材料的储能模量和玻璃化转变温度分别升高和降低。获得良好机械性能的 PU 和 ZnMn2O4 NPs 含量的最佳值分别为 0.73 重量百分比 (wt%) 和 0.15 wt% 与 EP 树脂的比例。还研究了最佳样品的抗菌性能，结果表明，随着纳米颗粒的加入，EP/PU 的抗菌性能有所提高。X 射线衍射、傅里叶变换红外、扫描电子显微镜/能量色散 X 射线分析、漫反射光谱 (DRS) 和振动取样器磁力计分析也被应用于研究优化纳米复合材料样品的化学和磁性能.