Preparation of Antibacterial Nanosilver Solution Microcapsules and Their Impact on the Performance of Andoung Wood Surface Coating

Abstract

In this paper, nanosilver solution was used as an antibacterial agent to prepare antibacterial microcapsules. The mass ratio of the core material to the wall material (Wcore: Wwall), the emulsifier’s hydrophilic–lipophilic balance (HLB) value, the mass ratio of ethanol to the emulsifier in solvent (Wcore: Wemulsion), and the rotational speed (r/min) were used to develop the four-factor, three-level orthogonal experiment, which was meant to investigate the most significant factors and the optimum process preparation parameters impacting the coating rate and yield of microcapsules. It was used to make an antibacterial coating that was applied to the surface paint film of a glass substrate and andoung wood, and it was mixed to the water-based primer with a content of 4%. Analyses of the mechanical, optical, and bactericidal characteristics were conducted. The micromorphology of the nanosilver solution microcapsules is influenced by the emulsifier’s HLB value. The color difference of the antibacterial coating film decreased with increasing emulsifier HLB value; however, the coating film’s gloss remained largely suitable. Additionally, the coating film’s transparency and tensile strength both decreased. It had minimal impact on the paint film’s surface hardness, but the adhesion and tensile strength showed a noticeable downward trend. The surface of the paint film was rough. Escherichia coli and Staphylococcus aureus were resistant to the antibacterial characteristics of the water-based primer film when it was combined with antibacterial nanosilver solution microcapsules by 80.7% and 74.55%, respectively. The coating film’s antibacterial properties were applied to the surface of the andoung wood, which were 75.7% and 71.0%, respectively, and somewhat decreased. In order to successfully inhibit bacteria, the nanosilver solution microcapsules were added to waterborne coatings. This ensures both the outstanding performance of the coating film and the effectiveness of the antibacterial effect. It expands the application prospects of antibacterial microcapsules in coatings.

Effect of Nano-Silver Solution Microcapsules Mixed with Rosin-Modified Shellac Microcapsules on the Performance of Water-Based Coating on Andoung Wood (Monopetalanthus spp.)

“…Based on the previous studies [30], nano-silver particles were almost impossible to observe due to their small content. So, the encapsulation rate of nano-silver solution microcapsules was 40%, and the core material containing nano-silver particles encapsulated in microcapsules was proved.…”

“…The preparation method of nano-silver solution microcapsules was developed from previous studies [30].…”

Study on the Effects of Selected Factors on the Diagonal Tensile Strength of Oblique Corner Furniture Joints Constructed by Wood Dowel

“…Wood is a natural, environmentally friendly, porous material widely utilized in wood construction and wood products [1][2][3]. It is the natural properties of wood that seriously influence the quality, appearance, and strength of wood products, such as wood furniture, doors, and windows [4][5][6][7][8][9][10][11][12].…”

Preparation of Chitosan-Modified Nano-Silver Solution Microcapsules and Their Effects on Antibacterial Properties of Waterborne Coatings

“…The resulting composite exhibited antibacterial properties against Staphylococcus aureus and Escherichia coli bacteria. Pan et al [25] prepared antibacterial nano-silver solution microcapsules, and their effect on the properties of a wood surface coating was investigated. Silver-based antimicrobial materials have broad-spectrum antibacterial properties, but due to their high active surface area and easy oxidation, nano-silver is prone to aggregation and deactivation, thus reducing its antimicrobial effect [26].…”