Synthesis and characterization of reversible epoxies for recyclable 3D printing by aphotothermal conversion*

Photothermal conversion using plasmonic nanomaterials for reversible epoxies based on the Diels-Alder

reaction is a promising approach for targeted self-healing materials and recyclable 3D printing materials.

In the presentation, reversible epoxies and their composite with plasmonic nanomaterials will be

studied for their 3D printability and mechanical properties before and after recycling processes. Various

formulations of reversible epoxies will be examined for 3D printing, for example, architecture, molecular

weight, the mixing ratio between precursors, and concentration of plasmonic nanomaterials. Processing

parameters for 3D printing of a selected formulation. Recycle processes will be carried

out by a solution method (i.e., dissolution in hot solvent and recovery) and a thermal cycle using bulk

heating or light. Their mechanical properties will be characterized and compared before and after

the recycling processes.