Research Progress in Lignin-based Vitrimer Materials
Vitrimer materials possess an unique molecular structure of covalent adaptive network(CAN),which allows the materials to exhib-it properties of both traditional thermoplastic and thermoset polymers.However,the synthesis of vitrimer materials primarily relies on petro-leum-based raw materials,and there is still room for improvement in terms of mechanical properties,thermal stability,and solvent tolerance compared to traditional thermosetting polymers.Lignin as a bio-based natural resource with a rigid structure,which offers great potential for enhanc-ing the performance of existing vitrimer materials and developing new ones.In this review,the recent research progress in utilizing lignin for the preparation of vitrimer materials was introduced,particularly focusing on lignin-based epoxy vitrimer and lignin-based polyurethane vitri-mer(including isocyanate and non-isocyanate).Additionally,advancements in the other lignin-based vitrimer materials were summarized.
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