What is the role of silane in the construction of silane-modified polyampholyte (S-PA) hydrogel coatings?

Label:chem

Topic
Silane is introduced into the polyampholyte hydrogel (PA) to enhance the mechanical properties and adhesion strength of the hydrogel coatings. The vinyl groups and silanol bonds on the silane molecule can form covalent bonds with the hydrogel and the solid substrate.
Answer
Silane plays a crucial role in enhancing the adhesive properties and mechanical strength of the S-PA hydrogel coatings. It forms covalent bonds with the hydrogel and the substrate, resulting in high adhesive strength (1980 J m−2) and improved bulk toughness. Additionally, silane acts as an orthosilicic acid analogue, disrupting diatom adhesion and contributing to the multi-scale antifouling effect of the hydrogel coatings.
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