Antibacterial Composites of Cuprous Oxide Nanoparticles and Polyethylene

International Journal of Molecular Sciences

Marina Nisnevitch¹  Yael Albo¹  Yanna Gurianov¹  Faina Nakonechny¹ 

[1] Department of Chemical Engineering, Biotechnology and Materials, Ariel University, Kyriat-ha-Mada, Ariel 4070000, Israel;

关键词: cuprous oxide nanoparticles;    linear low-density polyethylene;    composites;    adhesives;    antibacterial activity;    water disinfection;   

DOI  :  10.3390/ijms20020439

来源: DOAJ

【 摘 要 】

Cuprous oxide nanoparticles (Cu₂ONPs) were used for preparing composites with linear low-density polyethylene (LLDPE) by co-extrusion, thermal adhesion, and attachment using ethyl cyanoacrylate, trimethoxyvinylsilane, and epoxy resin. The composites were examined by Scanning electron microscope and tested for their antibacterial activity against Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli. All of these composites—except for the one obtained by extrusion—eradicated cells of both bacteria within half an hour. The composite prepared by thermal adhesion of Cu₂ONPs on LLDPE had the highest external exposure of nanoparticles and exhibited the highest activity against the bacteria. This composite and the one obtained using ethyl cyanoacrylate showed no leaching of copper ions into the aqueous phase. Copper ion leaching from composites prepared with trimethoxyvinylsilane and epoxy resin was very low. The antibacterial activity of the composites can be rated as follows: obtained by thermal adhesion > obtained using ethyl cyanoacrylate > obtained using trimethoxyvinylsilane > obtained using epoxy resin > obtained by extrusion. The composites with the highest activity are potential materials for tap water and wastewater disinfection.

【 授权许可】

Unknown