An Extremely Stretchable and Self-Healable Supramolecular Polymer Network

Abstract

The construction of a single polymer network with extreme stretchability, relatively high mechanical strength, and fast and facile autonomous room-temperature self-healing capability still remains a challenge. Herein, supramolecular polymer networks are fabricated by synergistically incorporating metal–ligand and hydrogen bonds in poly­(propylene glycol) (PPG). The representative specimen, PPG-Im-MDA-1.5-0.25-Cu, shows a combination of notable mechanical properties involving an extreme stretching ratio of 346 ± 14× and a Young’s modulus of 2.10 ± 0.14 MPa, which are superior to the previously reported extremely stretchable polymeric materials. Notably, the destroyed specimen can fully recover mechanical performances within 1 h. The tunability of mechanical properties and self-healing capability has been actualized by merely tailoring the content of a chain extender. The application of the as-prepared supramolecular PPG network in constructing a flexible and self-healable conductor has been demonstrated. This strategy provides some insights for preparing extremely stretchable and self-healable polymeric materials.

Digital Light Processing 3D Printing of Healable and Recyclable Polymers with Tailorable Mechanical Properties

“…However, after healing at 90 °C for 12 h, the resistance recovered to about 24 Ω and the LED lighted on again (Figure , parts c and d). The reason is that the healing of the underlaying polymer leads to the recovery of the tight connection of the Ag nanowires and furthers the good conductivity of the printed device. ,, …”

“…The reason is that the healing of the underlaying polymer leads to the recovery of the tight connection of the Ag nanowires and furthers the good conductivity of the printed device. 29,50,51 4. CONCLUSIONS In summary, we have demonstrated DLP printing of healable and recyclable polymers with a wide range of mechanical properties.…”

Influence of Monomers’ Structure on the Assembly and Material Property of Pillar[5]arene‐Based Supramolecular Polymer Gels

“…In recent years, supramolecular polymer gels (SPGs) [ 1‐3 ] have garnered increasing attentions in the material science field due to their unique properties and broad applications. Up to now, lots of SPGs have been constructed via non‐covalent interactions, [ 4‐6 ] such as supramolecular polymer network gels (SPNGs), [ 7‐11 ] supramolecular polymer organic framework gels (SOFGs), [ 12‐13 ] and other type SPGs. [ 14‐15 ] On the other hand, the inherent dynamic, reversible, and adaptive properties of non‐covalent bond interactions endow SPGs with excellent properties.…”

Supramolecular polymer networks crosslinked by crown ether-based host–guest recognition: dynamic materials with tailored mechanical properties in the bulk

“…18 Another typical application of SPNs is to endow the materials with diverse dynamic properties. 18,19 Due to the reversible dissociation/reformation of the supramolecular interactions, materials based on SPNs often show fascinating behaviors including self-healing, stimuli-responsiveness, adaptability, and reprocessibility, [20][21][22][23][24][25][26][27][28][29][30] which are difficult to achieve in covalent polymer networks (CPNs). Nevertheless, the research on SPNs is still in the exploratory stage, and developing SPNs with novel architectures and/or enhanced properties is crucial.…”