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Bio-based photo-reversible self-healing polymer designed from lignin

Abstract : Lignocellulose-derived p-hydroxycinnamic acids possess the photo-responsive reversible α,β-unsaturated ester moiety, a reactive structural feature that functions as the basis of the photo-reversible [2 + 2] cycloaddition reaction. To explore the potential of these naturally occurring compounds in the field of self-healing materials, novel bio-based photo-crosslinkable lignin- and glycerol-derived polyfunctional monomers having cinnamate groups were produced using a sustainable process from vanillin and syringaldehyde, two compounds readily obtained from the oxidation of lignin. Through a Structure–Activity Relationship (SAR) study, the structural design of these bio-based monomers was optimized with regards to the crosslinking/decrosslinking extent and the self-healing capacity of the corresponding polymer material. The lignin- and glycerol-derived tri-functional monomer with 4-O-propyl-ferulate moieties has facilitated the design of a new family of bio-based, environment-friendly and reversible self-healing materials for widespread applications. Computational density-functional theory (DFT) and time-dependent DFT calculations were further used for the verification of the SAR study in terms of dimerization energy of the synthesized monomers.
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Submitted on : Friday, January 7, 2022 - 4:10:19 PM
Last modification on : Friday, August 5, 2022 - 2:38:11 PM




Pallabi Sinha Roy, Matthieu Mention, Matthew Turner, Fanny Brunissen, Vasilios Stavros, et al.. Bio-based photo-reversible self-healing polymer designed from lignin. Green Chemistry, 2021, 23 (24), pp.10050-10061. ⟨10.1039/d1gc02957f⟩. ⟨hal-03517172⟩



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