Transimination reactions are one of the best dynamic covalent reactions to pursue when providing reprocessability to thermosets, as they can undergo exchange without the need for catalysts, by exposing the materials to stimuli like heat. In this work a series of five biobased vanillin derived resin formulations consisting of vanillin acrylate with vanillin methacrylate functionalized Jeffamines<b>®</b> were synthesized, and 3D printed using digital light projection (DLP). The resulting thermosets can be produced with a range of mechanical properties (Young’s modulus 0.26 – 332 MPa) which allows for an array of possible applications. The materials we obtained have self-healing abilities which were characterized by scratch healing tests. Additionally, dynamic transimination reactions enable these thermosets to be reprocessed when thermally treated above their glass transition temperatures under high pressures using a hot-press. Due to the simple synthetic procedures and the readily availability of commercial jeffamines®, these series of resins provide a promising alternative to commonly used 3D printable resins, in order to shift to materials with predominantly biobased content and help drift away from polymers made from non-renewable resources.

Vanillin-Jeffamine® derived resin formulations for 3D printing with self-healing and reprocessability based on transimination reactions

Fall 2022 abstracts, posters, and presentations will launch in mid-September.

ACS Fall 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.