Abstract
Herein, we report the preparation of polyacrylate-based vitrimer-like elastomers with dynamic bond-exchangeable cross-links. The component polymer is a poly(ethyl acrylate)-based copolymer that bears pyridine groups randomly and was cross-linked by a quaternization reaction with dibromo cross-linkers (dibromo hexane). In this system, bond exchange is induced via trans-N-alkylation at high temperatures, which is revealed by elongational creep and stress-relaxation tests. Some useful functions of the present material, such as reprocessability, recyclability, and unique solubility, were also demonstrated. A preparation of polyacrylate-based vitrimer-like elastomers with dynamic bond-exchangeable cross-links is demonstrated. The component polymer is a poly(ethyl acrylate)-based copolymer bearing pyridine groups randomly, which was cross-linked by a quaternization reaction of pyridine groups with dibromo cross-linkers (dibromo hexane). The bond exchange is induced via trans-N-alkylation of quaternized pyridines at high temperatures, which is revealed by temperature-ramp FT-IR, elongational creep, and stress-relaxation tests. Some useful functions of the present material, such as reprocessability, thermal and chemical recyclability, are provided due to the bond exchange nature.
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