Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown
Published: March 13, 2025
ABSTRACT The implementation of self‐healing properties in waterborne polyurethane (WPU) materials plays a pivotal role resource conservation and pollution mitigation. In this work, strategy was devised to balance the mechanical WPU by incorporating bis(hydroxyethyl) disulfide (HEDS), an aliphatic disulfide, as chain extender. synthesized constructed dynamic molecular network through bonds (SS). Meanwhile, physical cross‐linked formed hydrogen from carbamate groups. synergistic effect dual significantly contributed remarkable capability WPU. Specifically, optimal sample (SWPU‐15) not only exhibited tensile strength 33.42 MPa toughness 162.19 MJ/m 3 but also achieved healing efficiency 81.9% when heated at 80°C for 4 h. Profiting abundant bonds, SWPU‐15 could be recycled hot pressing or solvent treatment, with its remaining above 20 after recycling. This study provided feasible approach preparing environmentally friendly excellent performance demonstrates promising prospects potential applications.
Language: Английский