The exploration of new methods to produce food packaging with excellent physicochemical and antibacterial properties is of great scientific and technological interest. Here, we successfully prepare the food packaging films that are composed of konjac glucomannan (KGM), poly(ε-caprolactone) (PCL) and silver nanoparticles (AgNPs) via microfluidic spinning technology (MST). The obtained fiber films (average fiber diameter: 7.8 ± 0.2 μm) exhibit excellent antibacterial activities against S. aureus (34 ± 0.71 mm) and E. coli (39 ± 5.66 mm), which is ascribed to the good swelling of KGM in KGM/PCL/AgNPs fiber films (SD: 37.86 ± 6.87%). Fourier transform infrared (FT-IR) spectroscopy and X-ray diffraction (XRD) are employed to study the interactions between polymers. Thermogravimetric analysis (TGA), derivative thermogravimetry (DTG), water vapor permeability (WVP), and mechanical property measurements are conducted to evaluate the thermal properties, hydrophilicity and mechanical performances of the films. The results show that the films are thermal stable and relatively hydrophobic (WVP: 5.8 × 10⁻⁶ ± 1.44 g/(m·h·kPa), WCA: 101.0°) as well as have terrific elongation at break (EB: 223.59 ± 98.14%), which is beneficial for food packaging. This strategy provides a facile and green pathway for the construction of promising antibacterial food packaging.

探索生产具有优异的理化和抗菌性能的食品包装的新方法具有重大的科学技术意义。在这里，我们通过微流体纺丝技术（MST）成功制备了由魔芋葡甘露聚糖（KGM），聚（ε-己内酯）（PCL）和银纳米颗粒（AgNPs）组成的食品包装膜。所获得的纤维膜（平均纤维直径：7.8±0.2μm）对金黄色葡萄球菌（34±0.71 mm）和大肠杆菌具有优异的抗菌活性。（39±5.66 mm），这归因于KGM在KGM / PCL / AgNPs纤维薄膜中的良好溶胀（SD：37.86±6.87％）。傅里叶变换红外（FT-IR）光谱和X射线衍射（XRD）用于研究聚合物之间的相互作用。进行热重分析（TGA），导数热重分析（DTG），水蒸气渗透率（WVP）和机械性能测量，以评估薄膜的热性能，亲水性和机械性能。结果表明，该薄膜具有热稳定性和相对疏水性（WVP：5.8×10 ^-6 ±1.44 g /（m·h·kPa），WCA：101.0°，断裂伸长率极好（EB：223.59±98.14％），对食品包装有利。该策略为构建有前途的抗菌食品包装提供了简便而绿色的途径。