Synthesis and characterization of silver–thiolate dynamic crosslinking waterborne polyurethane with room-temperature self-healing properties

Abstract

Waterborne polyurethanes (WPUs), commonly used as coatings and adhesives, will produce microcracks when suffering from severe environmental stimuli or continuous mechanical loads. So far, there are only limited self-healing functional...

Smart healable polyurethanes: sustainable problem solvers based on constitutional dynamic chemistry

“…112 The direct coordination between metal nanomaterials and polymer chains provides much enhanced branching though the large specific surface area and dense metal coordination sites, thus providing the obtained composites with enhanced mechanical properties and high healing efficiency even at room temperature. For example, Luo et al 113 innovatively designed a waterborne polyurethane without any other reversible interaction in polymer chains, in which the coordination between Ag nanoparticles and thiols acts as the healing motifs (Fig. 16(c)).…”