Synthesis and performance of enhanced biobased epoxy vitrimers based on intramolecular hydrogen bonding
The bio-based vitrimers is an innovative renewable polymer with promising applications.However,its application is limited due to the mutual exclusion of its mechanical properties and remodeling capabilities and the use of catalysts in the preparation process.In response to the difficulty of balancing structural rigidity and remodeling ability of vitrimers,the catalyst free bioepoxy vitrimers containing intramolecular hydrogen bonds was synthesized,and their thermal properties,mechanical properties and reprocessing properties were characterized.The results showed that with the increase of intramolecular hydrogen bonding structure,the Tg and mechanical properties of vitrimers were improved,and the reprocessing performance was excellent.It was proved that the intramolecular hydrogen bonding induced vitrimmers balance structural rigidity and remodeling ability,providing new ideas for the development of vitrimmers.
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