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CuO and CuO/Vermiculite Based Nanoparticles in Antibacterial PVAc Nanocomposites
Journal of Inorganic and Organometallic Polymers and Materials ( IF 4 ) Pub Date : 2020-05-08 , DOI: 10.1007/s10904-020-01573-y
Karla Čech Barabaszová , Sylva Holešová , Martin Bílý , Marianna Hundáková

Copper oxide (CuO) nanoparticles are used in a wide range of applications due to its specific chemical, surface and microstructural characteristics, excellent physicochemical properties and cost effectiveness. The combination of the CuO with the vermiculite (V) particles allows to the preparation of nanostructured materials with specific properties. CuO nanoparticles were prepared by sonochemical synthetic method followed by a heat treatment (at 350 °C for 90 min) with the used of Cu(NO3)2 and NaOH precursors. Natural V was used for nanocomposite structures preparation (CuO/V). The nanostructured samples were characterized using scanning electron microscopy and X-ray diffraction. The particle size (median diameter, d50), ξ-potential and specific surface area were analysed. The antibacterial efficiency was evaluated by finding the minimum inhibitory concentration against Staphylococcus aureus and Enterococcus faecalis. The polyvinyl acetate (PVAc) nanocomposite plates were prepared using 0.1, 0.5 and 1 wt% of CuO (respectively CuO/V) nanostructured materials as functional nanofillers and were characterized by X-ray diffraction, scanning electron microscopy and 3D optical light microscope. The positive effect of vermiculite particles on homogeneous distribution in PVAc matrix was shown. The antibacterial activity was evaluated against Staphylococcus aureus and Enterococcus faecalis. Significant antibacterial behavior with long-acting after 24 h against Staphylococcus aureus was evaluated for all PVAc nanocomposites. The results show that already 0.1 wt% of CuO nanofillers (respectively CuO/V) in the PVAc matrix produce an antibacterial surface against Staphylococcus aureus.



中文翻译:

抗菌PVAc纳米复合材料中的基于CuO和CuO / Ver石的纳米颗粒

氧化铜(CuO)纳米粒子因其特定的化学,表面和微观结构特性,出色的物理化学特性和成本效益而被广泛应用。CuO与the石(V)颗粒的组合允许制备具有特定性质的纳米结构材料。通过声化学合成方法制备CuO纳米颗粒,然后使用Cu(NO 32和NaOH前体进行热处理(在350°C下进行90分钟)。天然钒用于纳米复合结构的制备(CuO / V)。使用扫描电子显微镜和X射线衍射对纳米结构样品进行表征。粒径(中值直径,d 50),ξ分析了电位和比表面积。通过找到对金黄色葡萄球菌粪肠球菌的最小抑菌浓度来评价抗菌效果。聚乙酸乙烯酯(PVAc)纳米复合板是使用0.1、0.5和1 wt%的CuO(分别为CuO / V)纳米结构材料作为功能性纳米填料制备的,并通过X射线衍射,扫描电子显微镜和3D光学显微镜进行了表征。结果表明of石颗粒对PVAc基体中均匀分布具有积极作用。评价了对金黄色葡萄球菌粪肠球菌的抗菌活性。显着的抗菌作用,24小时后长效对所有PVAc纳米复合材料均评估了金黄色葡萄球菌。结果表明,PVAc基质中已经有0.1 wt%的CuO纳米填料(分别为CuO / V)产生了针对金黄色葡萄球菌的抗菌表面。

更新日期:2020-05-08
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