Fabrication and characterization of neodymium-macrocycle and its MDOPE composite antibacterial films
摘要
This work aims to investigate relative effects of neodymium-macrocycle complex Nd-2f as the antimicrobial agent on the microstructure, thermal stability, and antibacterial activity of Nd-2f/MDOPE (machine direction orientation polyethylene) composite films. Under two different contents, 0.5 wt% and 5.0 wt% Nd-2f/MDOPE composite films are designed and prepared by the extrusion blow molding technology. They are carefully characterized by Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). It is shown that the low-content Nd-2f can be uniformly mixed with MDOPE substrate. Compared with the pure MDOPE film, the incorporation of complex Nd-2f will not affect the basic properties of MDOPE but greatly promote its antibacterial activity. When the content of complex Nd-2f is 0.5 wt%, the Nd-2f/MDOPE composite film shows optimal overall performance with excellent thermal stability and antibacterial activity, and it is thus referable for more polyethylene composite antibacterial films with high dispersibility and compatibility.