Tough,\nLong-Term, Water-Resistant, and Underwater\nAdhesion of Low-Molecular-Weight Supramolecular Adhesives

Abstract

Modern\nfunctional adhesives have attracted considerable attention\ndue to their reversible adhesion capacities and stimuli-responsive\nadhesion behavior. However, for modern functional adhesives, polymeric\nstructures were highly necessary to realize adhesion behaviors. Supramolecular\nadhesives from low-molecular-weight monomers were rarely recognized.\nCompared with polymeric adhesive materials, it remains challenging\nfor supramolecualr adhesive materials to realize tough adhesion on\nwet surfaces or even under water. In this study, a new supramolecular\nadhesive consisting of low-molecular-weight monomers was successfully\ndesigned and prepared. Strong and long-term adhesion performance was\nrealized on various surfaces, with a maximum adhesion strength of\n4.174 MPa. This supramolecular adhesive exhibits tough and stable\nadhesion properties in high-moisture and underwater environments (including\nseawater). Long-term underwater adhesion tests display the potential\napplication of low-molecular-weight adhesive as a marine adhesive.