Preparation of ZnO Nanoparticle/Acrylic Resin Superhydrophobic Coating via Blending Method and Its Wear Resistance and Antibacterial Properties

Abstract

Herein, a facile method for the preparation of an acrylic resin-based superhydrophobic coating is provided. Firstly, ZnO nanoparticles were modified with silane to obtain hydrophobic ZnO, which was then homogeneously blended with acrylic resin. Subsequently, the mixture was sprayed on an aluminum sheet to form a cured coating. The surface composition and morphology of the coating were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The hydrophobicity, wear resistance, and antibacterial properties of the prepared samples were tested. The optimized hydrophobicity was achieved with 10 wt% modification agent and resin-to-ZnO mass ratio of 1:4, exhibiting contact and sliding angles of 168.11° and 7.2°, respectively. Wear resistance was insufficient with a low resin content, while it grew with the increase in the resin content. However, when the resin content was excessively high, the hydrophobicity was reduced because the resin could wrap the modified ZnO nanoparticles and decrease the number of hydrophobic groups on the surface. Compared with the pure acrylic resin coating, the ZnO nanoparticle/acrylic resin superhydrophobic coating demonstrated a significant enhancement in the antibacterial properties.

AgCu Nanoparticles as an Antibacterial Coating for Wood

“…Furthermore, the prepared nano AgCu alloy as an antibacterial in this study shows significant advantages compared to the common antimicrobial nanomaterials (Figure ). The antimicrobial rate against E. coli at 100% could be realized with an extremely low dosage of nano AgCu (0.001%), which is much lower than the reported values. ,,− Similarly, trace nano AgCu alloy (0.001%) endows a 100% antibacterial effect against S. aureus , which surpasses the familiar nano antibacterials. ,,,− ,− Besides, the antibacterial time of nano AgCu alloy with100% reduction in bacterial counts could be largely shortened from 4–8 h ,, to 1 min. Therefore, the nano AgCu alloy with superior antibacterial property in low concentration and short time shows potential in constructing highly antibacterial wood.…”

Evaluation of Aging Effect on the Durability of Antibacterial Treatments Applied on Textile Materials for the Automotive Industry

“…Considering now the effects of the stresses on the tested materials, starting with the synthetic leather, mechanical stress and thermal stress, even if combined, did not decrease in a relevant way the antibacterial action against E. coli and S. aureus . Despite the diminution of the surface hydrophobicity, ascribable to the partial polyurethane coating damage caused by the mechanical abrasion of the wear test, , the antibacterial action is preserved, probably thanks to the layer-by-layer antibacterial treatment application. In addition, if we consider SEM results, it is possible to notice that samples TW and TTW do not present any differences compared with sample TN, indicating the preservation of the surface morphology.…”

Antiviral Properties against SARS-CoV-2 of Nanostructured ZnO Obtained by Green Combustion Synthesis and Coated in Waterborne Acrylic Coatings

“…The present study evaluates the virucidal activity of acrylic paint surfaces painted with nanostructured ZnO pigments. Zinc oxide has been reported as antibacterial material, being active against Gram-positive and Gram-negative bacteria [ 15 , 16 , 17 ], as well as an antiviral material [ 13 , 18 ], which has potential application in different systems such as food packaging [ 19 ] and antipathogenic surfaces [ 20 ]. ZnO composites have been incorporated into polymers and tested as antiviral/antibacterial surfaces [ 7 , 13 , 20 ].…”