Adhesive behavior of polyelectrolyte hydrogel bonded to concrete surfaces
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초록
내용
Recently, Polyelectrolyte (PE) hydrogel has attracted attention among tough hydrogels. This hydrogel possesses the physical ionic crosslinking of cation and anionic monomers with a reversible network structure. It features strong mechanical properties, biocompatibility, self-healing property, and adhesion to tissues with positive and negative charges. The previous works in our group showed that PE hydrogels adhere to concrete structures. In this study, we investigated the mechanism by which PE hydrogels bind to concrete surfaces. Experimental results suggest that the hydrogels are electrostatically bonded to the cement surface. The chemical composition of the gel with the best adhesive properties could be determined. There was no dependency of peeling speed on binding energy with concrete. In addition, it was found that the adhesion properties decreased when the mixture was added to the conventional Portland cement.