Study on Antibacterial Properties of Metal Matrix Composites for Medical Scaffolds

Abstract

Metal composites' antibacterial properties have piqued the interest of numerous sectors, including industry, healthcare, and environmental applications. One important advantage of metal composites is their capacity to damage bacterial cell membranes. Magnesium-based nanocomposites have demonstrated significant potential as materials possessing potent antibacterial properties. The addition of nanoparticles like silver, zinc oxide, or copper oxide improves the antibacterial properties of magnesium matrices. Certain metals, such as silver and copper, release ions that interfere with essential bacterial processes. These ions have the power to damage cell membranes, DNA, and proteins, which ultimately causes bacterial death. Copper ions (Cu2+), which are produced when copper is added to composite materials, damage proteins, DNA, and bacterial cell membranes. Moreover, silver nanoparticles emit Ag+, which has a broad spectrum of antibacterial activity. These ions kill bacteria by interfering with their ability to function as proteins and enzymes. Zinc ions interfere with bacteria's metabolism, stopping them from breathing and proliferating. Iron is commonly used as the base material for these composites due to the mechanical strength and biocompatibility. It provides the structural stability needed for the implant while acting as a platform for the addition of antibacterial substances. This study examines the antibacterial properties of different metal composites.