Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, China.
Engineering Research Center for Nanomaterials Co. Ltd., Henan University, Jiyuan, 459000, China.
Sci Rep. 2022 Aug 1;12(1):13206. doi: 10.1038/s41598-022-17484-6.
Functional fabrics with antibacterial performance are more welcome nowadays. However, the fabrication of functional fabrics with durable, steady performance via a cost-effective way remains a challenge. Polypropylene (denoted as PP) nonwoven fabric was modified by polyvinyl alcohol (denoted as PVA), followed by the in-situ deposition of silver nanoparticles (denoted as Ag NPs) to afford PVA-modified and Ag NPs-loaded PP (denoted as Ag/PVA/PP) fabric. The encapsulation of PP fiber by PVA coating contributes to greatly enhancing the adhesion of the loaded Ag NPs to the PP fiber, and the Ag/PVA/PP nonwoven fabrics exhibit significantly improved mechanical properties as well as excellent antibacterial activity against Escherichia coli (coded as E. coli). Typically, the Ag/PVA/PP nonwoven fabric obtained at a silver ammonia concentration of 30 mM has the best mechanical properties and the antibacterial rate reaches 99.99% against E. coli. The fabric retains excellent antibacterial activity even after washing for 40 cycles, showing prospects in reuse. Moreover, the Ag/PVA/PP nonwoven fabric could find promising application in industry, thanks to its desired air-permeability and moisture-permeability. In addition, we developed a roll-to-roll production process and conducted preliminary exploration to verify the feasibility of this method.
具有抗菌性能的功能性织物如今更受欢迎。然而，通过一种具有成本效益的方式来制造具有耐用、稳定性能的功能性织物仍然是一个挑战。通过聚乙烯醇（PVA）对聚丙烯（PP）无纺纤维进行改性，然后原位沉积银纳米粒子（AgNPs），得到了 PVA 改性和负载 AgNPs 的 PP（Ag/PVA/PP）纤维。PVA 涂层对 PP 纤维的包裹作用极大地提高了负载 AgNPs 与 PP 纤维的黏附力，Ag/PVA/PP 无纺纤维的力学性能得到显著提高，对大肠杆菌（E. coli）的抗菌活性也显著增强。通常，在银氨浓度为 30mM 时得到的 Ag/PVA/PP 无纺纤维具有最佳的力学性能，对大肠杆菌的抑菌率达到 99.99%。即使经过 40 次洗涤，该织物仍保持优异的抗菌活性，具有重复使用的前景。此外，由于其理想的透气性和透湿性，Ag/PVA/PP 无纺纤维有望在工业中得到广泛应用。此外，我们还开发了一种卷对卷的生产工艺，并进行了初步探索，以验证该方法的可行性。
