CNR-ISMAC, Institute for Macromolecular Studies, C.so G. Pella 16, 13900, Biella, Italy.
CNR-ISMAC, Institute for Macromolecular Studies, C.so G. Pella 16, 13900, Biella, Italy.
Mater Sci Eng C Mater Biol Appl. 2019 Sep;102:164-170. doi: 10.1016/j.msec.2019.04.016. Epub 2019 Apr 17.
Antimicrobial textiles can contribute to the fighting against antibiotic resistance pathogenic microorganisms. Polypyrrole is a conjugated polymer that exerts a biocidal action thanks to positive charges on its backbone chain produced during it synthesis. In this work, dispersions of stable polypyrrole nanoparticles were produced by chemical oxidative polymerization at room temperature in water. An ultrasound-assisted coating process was then used to effectively treat a polyester fabric with the nanoparticles to obtain an optimal antibacterial coating which efficiently eradicates the bacteria. The results showed that the treated fabric with about 4 g/m of polypyrrole had log bacteria reductions of 6.0 against Staphylococcus aureus and 7.5 against Escherichia coli. The combination of a polypyrrole synthesis in the form of water nanoparticles dispersions and a continuous coating of fabrics supported by ultrasound overcomes some issues of upscaling of the traditional in-situ chemical deposition used until now for the production of polypyrrole-coated textiles.
抗菌纺织品有助于对抗对抗生素耐药的病原微生物。聚吡咯是一种共轭聚合物，由于其在合成过程中产生的主链上的正电荷，具有杀菌作用。在这项工作中，通过在室温下的水中进行化学氧化聚合，制备了稳定的聚吡咯纳米粒子分散体。然后使用超声辅助涂覆工艺，有效地用纳米粒子处理聚酯织物，以获得高效消除细菌的最佳抗菌涂层。结果表明，用约 4g/m 的聚吡咯处理的织物对金黄色葡萄球菌的对数减少为 6.0，对大肠杆菌的对数减少为 7.5。以水纳米粒子分散体形式合成聚吡咯与超声支持的织物连续涂层的结合，克服了迄今为止用于生产聚吡咯涂层纺织品的传统原位化学沉积方法在扩大规模方面的一些问题。
