{
    "protocol": "The antifogging coatings are fabricated by utilizing a cross-linked polyvinylpyrrolidone (PVP) matrix that is modified with two critical additives. The coatings are applied using a facile two-step spray-coating process onto various plastic surfaces.A 0.0265 g/mL solution of 1300 kDa PVP and 0.001 g/mL benzophenone was prepared by dissolving these components in a solution containing 1-propanol, distilled water, and 15% Hydrogen peroxide with a volumetric ratio of 0.931:0.029:0.040. Surfactants (such as Polysorbate 20, Polysorbate 80, Polysorbate 85, Span 20, or Span 80) and Pentaerythritol tetraacrylate (PETRA) were dissolved in 1-propanol in varying concentrations. These were then added to the solvent mixture to achieve a final volume ratio of 0.895 1-propanol: 0.027 DI water: 0.03915% H2O2: 0.019 PETRA/1-propanol solution: 0.019 surfactant/1-propanol solution. The combined solution was stirred in a glass septa-jar for over 2 hours until fully dissolved. For coating fabrication, polycarbonate strips were cleaned with isopropyl alcohol and exposed to 30 W oxygen plasma for 10 minutes. A homebuilt automated spray coating apparatus was used to coat the plasma-treated strips from a distance of 20 cm, with parameters set to a linear speed of approximately 20 cm/s, 2 spray passes, and a spray pressure of 20 psi. After spraying, the coatings were exposed to UVA and UVC light at a distance of 12 cm for 10 minutes."
}