Reversible matrix materials based on dissociative covalent adaptable networks

Reversible matrix materials based on dissociative covalent adaptable networks

In this lesson, reversible polymeric materials based on dissociative covalent adaptable networks are presented, focusing on the Diels-Alder chemistry as exemplary tool to obtain reversible macromolecular structures. The focus is placed on the fundamental mechanism that enable the formation and dissociation of the dynamic covalent bonds through the Diels-Alder (DA) and the retro-Diels-Alder (rDA) reactions, which allow the polymeric system to reorganize under a specific external stimulus, without negatively affecting the structural and functional response of the resulting material. The lesson also introduces experimental techniques used to verify the occurrence of the DA/rDA reaction, making it possible to identify the chemical and structural features associated with this peculiar chemistry.

Particular attention will be given to the advantages that these systems offer in terms of reprocessability and recyclability, illustrating how DA-based polymers represent a promising pathway toward sustainable and circular technologies, mainly in the field of composite materials.