Mechanics of vitrimer with hybrid networks

Vitrimer has recently emerged as a polymer combining great processability, self-healing capability and high-temperature mechanical properties. Most of those salient features vitrimer originate from the existence dynamic covalent bonds in network. To further adjust behaviors vitrimer, regular have been mixed with to create hybrid Percolation theory predicts that, if are homogenously mixed, high molar ratio is needed maintain reprocessing capabilities material. Herein, we experimentally show network only immiscible each other, can be synthesized low (less than 20 mol%), which still maintains its capabilities. Our discoveries will enable much greater tunability thermo-mechanical properties vitrimers such stress relaxation, creep resistance fracture toughness, important many their applications.