PDF(Pubmed)
Abstract：
With improvements in living standards, the demand for antibacterial self-cleaning coatings has significantly increased. In this work, self-cleaning coatings with antibacterial properties were fabricated by spray-coating a composite of fluorinated acrylic resin and Ag/SiO2 nanoparticles with quaternary ammonium salts. The synergistic action of the quaternary ammonium salts and silver nanostructures caused the coating to show a dual antibacterial effect. The Ag/SiO2 nanoparticles roughened the coating\'s surface and, in combination with the fluorinated chains, provided the surface a superhydrophobic self-cleaning property with a contact angle of 156° and a sliding angle of less than 2°. Notably, the composite coating withstood 100 abrasion cycles without losing its superhydrophobicity and the contact angle is still exceeded 150° after 60 h of immersion solutions with different pH values, demonstrating outstanding wear resistance and acid/alkali stability. The incorporation of nanostructured antibacterial agents was effective in improving the roughness and antibacterial properties of the low-surface-energy resin, resulting in a self-cleaning antibacterial composite coating. This method may pave a new route for the design of functional coating materials with excellent overall performance.
摘要：
随着生活水平的提高，抗菌自清洁涂料的需求显著增加。在这项工作中,通过用季铵盐喷涂氟化丙烯酸树脂和Ag/SiO2纳米颗粒的复合材料，制备了具有抗菌性能的自清洁涂层。季铵盐和银纳米结构的协同作用使涂层表现出双重抗菌作用。Ag/SiO2纳米粒子使涂层的表面变粗糙,与氟化链结合，为表面提供具有156°的接触角和小于2°的滑动角的超疏水自清洁性能。值得注意的是,复合涂层经受了100次磨损循环而不失去其超疏水性，在不同pH值的浸渍溶液60h后，接触角仍超过150°，表现出突出的耐磨性和酸/碱稳定性。纳米结构抗菌剂的掺入有效地改善了低表面能树脂的粗糙度和抗菌性能,产生自清洁抗菌复合涂层。该方法为综合性能优异的功能性涂层材料的设计开辟了一条新途径。
