Biological Activity and Nanostructuration of Fe3O4-Ag/High Density Polyethylene Nanocomposites

Journal of Composites Science

卷:3

Phuong Nguyen-Tri¹  VanThang Nguyen²  TuanAnh Nguyen³ 

[1] Department of Chemistry, University of Montréal, Quebec H3C 3J7, Canada;

[2] Faculty of Chemical Technology, Hanoi University of Industry, Hanoi 100000, Vietnam;

[3] Institute for Tropical Technology, Vietnam Academy of Science and Technology (VAST), Hanoi 122100, Vietnam;

关键词: polyethylene;    nanocomposites;    silver nanoparticles;    Fe₃O₄-Ag hybrid nanoparticles;    antibacterial activity;   

DOI  :  10.3390/jcs3020034

来源: DOAJ

【 摘 要 】

We report here the synthesis of uniform nanospheres-like silver nanoparticles (Ag NPs, 5–10 nm) and the dumbbell-like Fe₃O₄-Ag hybrid nanoparticles (FeAg NPs, 8–16 nm) by the use of a seeding growth method in the presence of oleic acid (OA)/oleylamine (OLA) as surfactants. The antibacterial activity of pure nanoparticles and nanocomposites by monitoring the bacterial lag–log growth has been investigated. The electron transfer from Ag NPs to Fe₃O₄ NPs which enhances the biological of silver nanoparticles has been proven by nanoscale Raman spectroscopy. The lamellae structure in the spherulite of FeAg NPs/High Density Polyethylene (HDPE) nanocomposites seems to play the key role in the antibacterial activity of nanocomposites, which has been proven by nanoscale AFM-IR. An atomic force microscopy coupled with nanoscale infrared microscopy (AFM-IR) is used to highlight the distribution of nanoparticles on the surface of nanocomposite at the nanoscale. The presence of FeAg NPs in PE nanocomposites has a better antibacterial activity than that reinforced by Ag NPs due to the faster Ag⁺ release rate from the Fe₃O₄-Ag hybrid nanoparticles and the ionization of Ag NPs in hybrid nanostructure.

【 授权许可】

Unknown