Recyclable 3D Printing of Polyimine-Based Covalent Adaptable Network Polymers

Recyclable 3D printing of thermosets was realized by utilizing the solvent-assisted recycling of covalent adaptable networks (CANs). The printouts, if damaged or after usage, were fully depolymerized in an organic solvent, and they were partially cured into a new ink for the next round of 3D printing. This work presents fundamental studies to understand the influences of ink composition and rheological properties on the printability,...