Dual physical cross-linked self-healing elastomer for the triple shape memory

Self-healing materials can autonomously heal injury like organism, which have attracted increasing attention from academics and industry engineers. However, the mechanical property and self-healing ability of the self-healing material is hard to be reconciled. Here, we report a simple approach to fabricate fast self-healing materials with high mechanical strength and improved triple shape memory effect by incorporation of nanoclay into a polymer matrix. The nanocomposite was prepared by in situ polymerization of poly(ethylene glycol) 400 methyl ether acrylate (mPEG-acrylate) and acryloylmorpholine (ACMO) in the presence of nanoclay. The thus obtained composite exhibits remarkable mechanical properties of an optimistic maximum tensile strength of similar to 8.9 MPa, and high healing efficiency of similar to 99.6% can be achieved after healing for only 1 min at room temperature. This strategy provides insights for the preparation of high-strength, multi-shape memory and fast self-healing composites.