A Facile Strategy to Construct Anti‐Swelling, Antibacterial, and Antifogging Coatings for Protection of Medical Goggles

Abstract

During the COVID‐19 (Corona Virus Disease 2019) pandemic, traditional medical goggles are not only easy to attach bacteria and viruses in long‐term exposure, but easy to fogged up, which increases the risk of infection and affects productivity. Bacterial adhesion and fog can be significantly inhibited through the hydrogel coatings, owing to super hydrophilic properties. On the one hand, hydrogel coatings are easy to absorb water and swell in wet environment, resulting in reduced mechanical properties, even peeling off. On the other hand, the hydrogel coatings don't have intrinsic antibacterial properties, which still poses a potential risk of bacterial transmission. Herein, an anti‐swelling and antibacterial hydrogel coating is synthesized by 2‐hydroxyethyl methacrylate (HEMA), acrylamide (AM), dimethylaminoethyl acrylate bromoethane (IL‐Br), and poly(sodium‐p‐styrenesulfonate) (PSS). Due to the self‐driven entropy reduction effect of polycation and polyanion, an ion cross‐linking network is formed, which endows the hydrogel coating with excellent antiswelling performance. Moreover, because of the synergistic effect of highly hydrated surfaces and the active bactericidal effect from quaternary ammonium cations, the hydrogel coating exhibits outstanding antifouling performances. This work develops a facile strategy to fabricate anti‐swelling, antifouling, and antifogging hydrogel coatings for the protection of medical goggles, and also for biomedical and marine antifouling fields.

Developments and Challenges of Hydrogel Coatings for Long-Term Marine Antifouling Applications

“…Yang et al [77] also proposed a facile strategy to construct antifouling hydrogel coatings for long-term biomedical and marine antifouling applications by making use of the synergistic effect of highly hydrated surfaces and the active bactericidal effect from quaternary ammonium cations. The hydrogel coating was prepared with 2-hydroxyethyl methacrylate (HEMA), acrylamide (AM), dimethylaminoethyl acrylate bromoethane (IL-Br), and poly(sodium-p-styrenesulfonate) (PSS).…”

Bioinspired Flexible Wearable Sensor with High Self-Cleaning and Antibacterial Performance for Human Motion Sensing

“…Finally, the diluted bacterial solution was uniformly spread onto the solid medium and cultured at 37 °C for 60 h. The cultured solid medium was photographed with a camera, and the plate counting method was used to count the number of bacteria on each medium. The antibacterial performance of CGP was assessed using the plate counting method. − The antibacterial rate ( E a ) was determined by using the following formula: E a = N g − N e N normalg × 100 % where N g is the number of bacterial colonies on solid medium for the glass control group, and N e is the number of bacterial colonies on solid medium for the experimental groups of PDMS, G30P, and CGP films.…”

Bioinspired Photoelectronic Synergy Coating with Antifogging and Antibacterial Properties

“…Obviously, antifogging and antibacterial (AF-AB) coatings could solve the above problems. − Antifogging and antibacterial coatings formed by cross-linking of polymers such as polyvinylpyrrolidone (PVP), poly­(acrylic acid) (PAA), and PEI have been reported. − For example, England et al have prepared long-lasting antifogging coatings with self-healing properties by cross-linking aminopropyl-functionalized clay (AMP-clay) and PVP . Furthermore, the durability of the coating was improved by the addition of Ag particles and glutaraldehyde (GA), which gave it antibacterial properties .…”