Covalent Adaptable Networks Incorporating Both Amino-Ester and Imine Bonds Toward Rapid Reprocessing
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We present a systematic investigation of a new series of covalent adaptable networks consisting of both amino-ester and imine bonds (AI-CANs). By adjusting the feed ratio of constituent monomers during synthesis, AI-CANs with varying compositions of amino-ester and imine bonds are synthesized, and their structure-property relationships are explored. In general, AI-CANs with a high content of aromatic imine bonds exhibit increased Tg and mechanical stiffness. Notably, our AI-CANs undergo network exchange under sufficient heat and pressure through both transesterification and imine metathesis in the absence of external catalysts. The presence of dual bond exchange processes results in accelerated stress-relaxation rate is accelerated (