Dopamine based effective anti-fogging coating with enhanced adhesion and durability

Abstract

Hydrophilic coatings, an effective strategy to achieve anti-fogging performance on substrates, still face the problem of poor endurability. In this work, a hydrophilic antifogging coating consisting of poly (2-acrylamido-2-methylpropanesulfonic acid-co-butyl acrylate-co-dopamine methacrylamide) was constructed, which shows significant anti-fogging performance, notable abrasion resistance and excellent adhesion. The combination of strong interfacial adhesion and hydrophilic/hydrophobic structure is key to this approach, which avoids interfacial failure and swelling-induced wrinkles under typical fogging conditions. The adhesion strength is higher than most commercial glues and high-performance polymer adhesives in the literatures since the catechol groups endows the coating marvelous adhesion to the substrate. This study provides a promising avenue for the design and fabrication as well as practical application of anti-fogging coating with strong adhesion strength.