In this study, Aronia melanocarpa fruit was extracted with ethanol, distilled water (pH 7), acidified distilled waters (at pH 5 and 3) as the solvent, the total polyphenol content, total flavonoid content, and anti-oxidant activity of the extracts were analyzed. Then, we investigated the possibility of producing nanofibers by the electrospinning process by adding the Aronia melanocarpa fruit extract (AE), which showed the greatest antioxidant effect, to a polyurethane (PU). The electrospinning method used a PU concentration of 10 wt% and 12 wt%, an applied voltage of 10 kV, a tip-to-collector distance of 15 cm, and flowrate of 0.3 mL/h. The analysis confirmed that the total polyphenol, total flavonoid content, and antioxidant activity of the distilled water extract were the highest at a pH value of 3. As the AE was added and its concentration increased, both the viscosity and the diameter of the nanofibers also increased. At PU concentrations of 10%, 12%, relatively uniform nanofibers without beads were prepared by adding 2 to 3 wt% and 0.5 to 2 wt% of the AE, respectively. At the above conditions, the diameters of the nanofibers that were produced were in the range of 227 to 420 nm, so it was evident that PU/AE nanofibers with various diameters could be prepared by controlling the concentration of PU and AE. In addition, the FT-IR, XRD, and DSC analyses confirmed that hydrogen bonding occurred between the AE and the PU. Thus, the resulting crystallinity, melting point, and reduction in the heat capacity confirmed that the AE was well mixed with the PU polymer.

中文翻译：

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负载聚氨酯纳米网的电纺刺果果提取物的表征。

在这项研究中，用乙醇，蒸馏水（pH 7），酸化的蒸馏水（pH 5和3）作为溶剂，提取物的总多酚含量，总黄酮含量和抗氧化活性提取了无花果果实。被分析。然后，我们研究了通过静电纺丝工艺向纳米聚氨酯纤维（PU）添加纳米纤维的可能性，方法是将具有最大抗氧化作用的Aronia melanocarpa果实提取物（AE）添加。电纺丝法使用的PU浓度为10 wt％和12 wt％，施加的电压为10 kV，针尖到集电极的距离为15 cm，流速为0.3 mL / h。分析证实，蒸馏水提取物的总多酚，总黄酮含量和抗氧化活性在pH值为3时最高。随着AE的加入及其浓度的增加，纳米纤维的粘度和直径也均增加。在PU浓度分别为10％，12％时，通过分别添加2至3重量％和0.5至2重量％的AE来制备没有珠的相对均匀的纳米纤维。在上述条件下，产生的纳米纤维的直径在227至420nm的范围内，因此显然可以通过控制PU和AE的浓度来制备具有各种直径的PU / AE纳米纤维。此外，FT-IR，XRD和DSC分析证实在AE和PU之间发生了氢键键合。因此，所得的结晶度，熔点和热容量的降低证实了AE与PU聚合物充分混合。在PU浓度分别为10％，12％时，通过分别添加2至3重量％和0.5至2重量％的AE来制备没有珠的相对均匀的纳米纤维。在上述条件下，制得的纳米纤维的直径在227至420nm的范围内，因此显然可以通过控制PU和AE的浓度来制备具有各种直径的PU / AE纳米纤维。此外，FT-IR，XRD和DSC分析证实在AE和PU之间发生了氢键键合。因此，所得的结晶度，熔点和热容量的降低证实了AE与PU聚合物充分混合。在PU浓度分别为10％，12％时，通过分别添加2至3重量％和0.5至2重量％的AE来制备没有珠的相对均匀的纳米纤维。在上述条件下，制得的纳米纤维的直径在227至420nm的范围内，因此显然可以通过控制PU和AE的浓度来制备具有各种直径的PU / AE纳米纤维。此外，FT-IR，XRD和DSC分析证实在AE和PU之间发生了氢键键合。因此，所得的结晶度，熔点和热容量的降低证实了AE与PU聚合物充分混合。产生的纳米纤维的直径在227至420nm的范围内，因此显然可以通过控制PU和AE的浓度来制备具有各种直径的PU / AE纳米纤维。此外，FT-IR，XRD和DSC分析证实在AE和PU之间发生了氢键键合。因此，所得的结晶度，熔点和热容量的降低证实了AE与PU聚合物充分混合。产生的纳米纤维的直径在227至420nm的范围内，因此显然可以通过控制PU和AE的浓度来制备具有各种直径的PU / AE纳米纤维。此外，FT-IR，XRD和DSC分析证实在AE和PU之间发生了氢键键合。因此，所得的结晶度，熔点和热容量的降低证实了AE与PU聚合物充分混合。