Antibacterial fibers have great potential in many applications including wound dressings, surgical gowns, and surgical sutures, and play an important role in our daily life. However, the traditional fabrication method for the antibacterial fibers shows high cost, complexity, and inferior antibacterial durability. Herein, we report a facile and scalable fabrication of highly effective antibacterial alginate (SA) composite fibers through blend spinning of zeolitic imidazolate framework-67 (ZIF-67) particles and SA. The fabricated ZIF-67@SA composite fibers show high tensile strength and initial modulus. More importantly, the ZIF-67@SA composite fibers demonstrate excellent antibacterial properties, and the antibacterial efficiency reaches over 99% at ultralow ZIF-67 loading (0.05 wt%). In addition, the ZIF-67@SA fibers show good antibacterial durability even after 5 laundering cycles. The excellent antibacterial performance of the ZIF-67@SA fibers are attributed to the synergistic effects of highly effective antibacterial ZIF-67 particles, swelling of alginate, and immobilization of ZIF-67 particles on both inside and outside fiber surface. This work may shed light on the antibacterial mechanism of metal organic frameworks and pave the way for the development of high-performance antibacterial textiles.

中文翻译：

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高效抗菌沸石咪唑骨架-67/藻酸盐纤维

抗菌纤维在伤口敷料、手术衣和手术缝合线等许多应用中具有巨大潜力，在我们的日常生活中发挥着重要作用。然而，传统的抗菌纤维制造方法成本高、复杂且抗菌耐用性较差。在此，我们报告了通过沸石咪唑酯骨架-67 (ZIF-67) 颗粒和 SA 的共混纺丝，简便且可扩展地制造高效抗菌藻酸盐 (SA) 复合纤维。制造的 ZIF-67@SA 复合纤维显示出高拉伸强度和初始模量。更重要的是，ZIF-67@SA复合纤维表现出优异的抗菌性能，在超低ZIF-67负载量（0.05 wt%）下抗菌效率达到99%以上。此外，即使经过 5 次洗涤循环，ZIF-67@SA 纤维仍显示出良好的抗菌耐久性。ZIF-67@SA纤维优异的抗菌性能归功于高效抗菌ZIF-67颗粒、海藻酸盐溶胀以及ZIF-67颗粒在纤维内外表面的协同作用。这项工作可能有助于阐明金属有机骨架的抗菌机制，为开发高性能抗菌纺织品铺平道路。