High-performance polyimine vitrimers from an aromatic bio-based scaffold
Kevin A. Stewart, Jacob J. Lessard, Alexander J. Cantor, John F. Rynk, Laura S. Bailey, Brent S. Sumerlin
Abstract
) ranging from 9 to 147 °C, degradation temperatures (5% mass loss) up to approximately 370 °C, and excellent char yields up to 68% at 650 °C under nitrogen. Moreover, the vitrimers displayed mechanical reprocessability over five destruction/healing cycles and rapid chemical recyclability following acidic hydrolysis at mild temperatures. Our findings indicate that vitrimers possessing tunable properties and high-performance thermomechanical behavior can be easily constructed from vanillin and electrophilic aromatic scaffolds for applications in heat-shielding materials and ablative coatings.
Topics & Concepts
Thermal stabilityVanillinMaterials scienceThermosetting polymerNucleophilic aromatic substitutionPolymerCharGlass transitionChemical engineeringHydrolysisBisphenol AOrganic chemistryChemistryComposite materialEpoxyNucleophilic substitutionPyrolysisEngineeringPolymer composites and self-healingElectrospun Nanofibers in Biomedical ApplicationsLignin and Wood Chemistry