Factors affecting antibacterial activity of acrylic resin containing silver nanoparticles

Abstract

In this research, silver nanoparticles were dispersed into acrylic emulsion by high-speed stirring method using scattered disc at room temperature. Antibacterial activity of the mixture was examined through changes of some parameters such as nanosilver concentration, dispersing time and water addition amount. The antibacterial properties were evaluated via changes of number and size of colonies forming on the surface of the film casting from this mixture in petri dishes. Besides that, the silver nanoparticles distribution ability into the film was evaluated through the analysis of scanning electron microscope images. As results, the surfaces of the acrylic resin shown on the high antibacterial resistance rates reached about 97.89% for 1,500 ppm silver nanoparticles dispersing into acrylic emulsion in 3 hours with the water addition amounts about 5%.