Abstract Fibrous membranes based on polyhydroxybutyrate/poly-e-caprolactone (PHB/PCL) blends were obtained by electrospinning. Composite nanoparticles produced from N-halamine precursors and silane precursors were used to modify silica hydrosol which were obtained by the condensation of tetraethylorthosilicate followed the Stober method. The produced composite nanoparticles were characterized by TEM and FT-IR. The dip-pad process was used to coat the synthesized silica composite nanoparticles onto the fibrous membrane. The coated PHB/PCL fibrous membranes were characterized by SEM, FT-IR and TGA. After chlorination, the chlorinated fibrous membranes showed excellent hydrophobicity with water contact angle of 151° ± 1° and exhibited effective antimicrobial activity against Escherichia coli O157:H7 and Staphylococcus aureus with 99.95% and 99.91% bacterial reduction within 60 min of contact time, respectively. The coated membranes showed good stability and durability toward UVA light exposure and storage. The cell biocompatibility test indicated that the membranes have no cytotoxicity. Therefore, the designed antibacterial fibrous membranes with super hydrophobicity may have great potential for use in food packaging and biomedical materials.

中文翻译：

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二氧化硅复合水解改性的可生物降解聚羟基丁酸酯/聚-ɛ-己内酯纤维膜具有超疏水性和出色的抗菌应用

摘要 通过静电纺丝获得了基于聚羟基丁酸酯/聚己内酯 (PHB/PCL) 共混物的纤维膜。由N-卤胺前驱体和硅烷前驱体制备的复合纳米粒子用于改性二氧化硅水溶胶，二氧化硅水溶胶通过原硅酸四乙酯缩合获得，遵循Stober方法。制备的复合纳米粒子通过 TEM 和 FT-IR 进行表征。浸渍法用于将合成的二氧化硅复合纳米粒子涂覆到纤维膜上。涂覆的PHB/PCL纤维膜通过SEM、FT-IR和TGA表征。氯化后，氯化纤维膜表现出优异的疏水性，水接触角为151°±1°，对大肠杆菌O157:H7和金黄色葡萄球菌表现出99.95%和99%的有效抗菌活性。在接触时间的 60 分钟内分别减少 91% 的细菌。涂覆的膜对UVA光暴露和储存显示出良好的稳定性和耐久性。细胞生物相容性试验表明该膜没有细胞毒性。因此，设计的具有超疏水性的​​抗菌纤维膜在食品包装和生物医学材料方面具有巨大的应用潜力。