Polyvinyl alcohol (PVA), PVA/silk sericin (SS) and PVA/SS/AgNPs (nano-silver) solutions have been prepared, and the nanofibres are produced by electrospinning technology. The nanofibres are then tested using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The results show that the morphology of 7-11 wt% PVA nanofibres is fine and smooth. With the increase in SS and AgNPs contents, the average diameter of PVA/SS and PVA/SS/AgNPs composite nanofibres is increased. The FTIR spectra and XRD patterns of PVA/SS/AgNPs composite nanofibres with different mass ratios have the similar regular curves. The intensity of the infrared peak of PVA/SS/AgNPs composite nanofibres weakens at 837, 1087, 1648 and 2914 cm-1 with the increase in AgNPs; the intensity of the diffraction peak gradually increases at 13.1o and weakens at 19.09 °. This may be due to the reason that Ag interacts with PVA and SS molecules. The findings are of great significance for the development of nano-scale antibacterial fibres.

中文翻译：

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PVA/SS/AgNPs复合纳米纤维的制备及性能

制备了聚乙烯醇（PVA）、PVA/丝胶（SS）和PVA/SS/AgNPs（纳米银）溶液，并通过静电纺丝技术生产纳米纤维。然后使用扫描电子显微镜 (SEM)、傅里叶变换红外光谱 (FTIR) 和 X 射线衍射 (XRD) 测试纳米纤维。结果表明，7-11 wt% PVA 纳米纤维的形态细腻光滑。随着SS和AgNPs含量的增加，PVA/SS和PVA/SS/AgNPs复合纳米纤维的平均直径增加。不同质量比的PVA/SS/AgNPs复合纳米纤维的FTIR光谱和XRD图谱具有相似的规则曲线。随着AgNPs的增加，PVA/SS/AgNPs复合纳米纤维的红外峰强度在837、1087、1648和2914 cm-1处减弱；衍射峰强度在13.1°逐渐增大，在19.09°减弱。这可能是由于 Ag 与 PVA 和 SS 分子相互作用的原因。该研究结果对纳米级抗菌纤维的开发具有重要意义。