Research Progress of Thermosetting Resin Based on Vanillin
Vanillin is a commercially available monoaromatic compound,which can be produced from lignosulfonates,and has become a hot research topic in material science owing to its unique chemical structure.This review firstly introduces the research progress of vanillin-based thermosetting materials,including epoxy resins,benzoxazines,phenolic resins and(meth)acrylates,emphasizing the chemical derivatization and crosslinking process based-on the unique structure of vanillin.Then,thermosetting resins with dynamic covalent bonds are summarized with their potential applications.The aldehyde group on vanillin facilitates the introduction of dynamic acetal,imine and dithioacetal groups,while disulfide,Diels-Alder adducts and β-hydroxyl esters can be installed by choosing the cross-linking system.After summarizing their properties and applications,a perspective is provided on its sustainability over raw material availability,material preparation,recycling,and degradation.
vanillinthermosetting resindynamic covalent bondrecyclable thermosetting material
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