Molecular Design in Dynamic (Meth)acrylic Cross-linkers for Tough, Self-healing, and Recyclable Elastomer

The development of high-performance elastomers with customizable mechanical, self-healing, and degradative properties is essential for their utilization in advanced applications and environmental preservation. In this study, three dynamic covalent cross-linkers were synthesized and integrated into acrylic elastomer formulations. Their chemical design explored the effects of aromatic disulfide, α-methyl, urea, and urethane moieties on the elastomers' physicochemical properties. The findings highlight the versatility of these cross-linkers, demonstrating their critical role in enhancing thermal stability, mechanical performance, self-healing, and recyclability. This research underscores the transformative potential of molecular cross-linker design in advancing recyclable and repairable materials for diverse applications.