International. There are nanotechnology-based materials that can be used as antimicrobial additives in different applications such as water-based paints.
Antimicrobial paints are an important tool to avoid interior and biological colonization therefore prevents bio-deterioration of paint and health problems in people and pets. These paints would have application in kitchens, bathrooms and hospitals.
The present study evaluated the incorporation of silver nanoparticles (of two different sizes), copper and zinc oxide in water-based paints for interiors and the bio-resistance imparted by it. The antifungal activity of nanoparticles is a less studied topic in relation to antibacterial activity but it is not the least important from an environmental point of view.
Molds grow in indoor environments that contribute significantly to the formation of bioaerosols and therefore to the deterioration of air pollution and human health. In this sense, this research evaluated the antifungal activity of the nanoparticles using previously isolated fungi, Chaetomium globosum and Alternaria Alternaria, in solid medium.
Then, the bio-resistance of acrylic paints, with built-in nanoparticles, was evaluated in petri dishes and the observations were made using a scanning electron microscope. The best results were obtained with the paint containing silver with the smallest size (10 nm).
