Abstract PLA/PCL co-mingled nanofibrous mats were prepared via multi-jet electrospinning. The concentration of PLA and PCL in the co-mingled mats were controlled by changing the flow rate of the two polymer solutions. The amount of PLA and PCL in the co-mingled nanofibrous mats was monitored by UV–Vis measurements through a colored dye added to PLA and by FTIR-ATR analysis. Morphology and mechanical properties of the nanofibrous mats were respectively examined by scanning electron microscopy (SEM) and tensile tests. Water contact angles measurements were also carried out in order to investigate the wettability of the materials. Finally, the hydrolytic degradation of the mats in buffer solution at pH 4, pH 7 and pH 10 were studied up to 50 days.

中文翻译：

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双喷射静电纺丝制备的 PLA/PCL 共混纳米纤维垫的制备、表征和水解降解

摘要 PLA/PCL 共混纳米纤维垫是通过多喷射静电纺丝制备的。通过改变两种聚合物溶液的流速来控制混合垫中 PLA 和 PCL 的浓度。通过添加到 PLA 中的有色染料的 UV-Vis 测量和 FTIR-ATR 分析来监测共混纳米纤维垫中 PLA 和 PCL 的含量。通过扫描电子显微镜（SEM）和拉伸试验分别检查纳米纤维垫的形态和机械性能。还进行了水接触角测量以研究材料的润湿性。最后，研究了垫在 pH 4、pH 7 和 pH 10 缓冲溶液中的水解降解长达 50 天。