High-resolution 3D printable inks based on functional polymeric ionic liquids for applications in carbon dioxide valorization

This study investigates the use of epoxy-functionalized acrylate-based 3D printable ink for creating high-resolution functionalized devices, exploring the possibility to further functionalize those for chemical engineering applications. In fact, the control of the epoxy-functionalized surface enables the formation of active surfaces, and this study employs supported Ionic Liquids with catalytic properties as a proof of concept. Ionic liquids (ILs) and polymeric derivatives represent a promising path to generate multifunctional complex 3D structures, playing advanced roles in multiple applications. The fine-tuning of the functionalization methodology and formulation enhances the resolution of acrylate-based resins, allowing the production of highly detailed structures that can significantly boost catalytic efficiency. Through a comparison with commercial resins, the developed formulation demonstrates superior resolution capabilities, positioning it as an effective alternative for use in vat photopolymerization technologies. Additionally, controlling the level of functionalization and accessibility of the ILs' active sites through the control of the surface area of the reactor has led to improved process performance in terms of yield and space-time yield (STY) in the CO2 cycloaddition to epoxide reaction. •Epoxy acrylate-based formulations for vat photopolymerization with high resolution are presented.•The fabricated parts can be superficially modified to render active structured devices.•The functionalization methodology has been optimized to increase the catalyst amount effectively.•The high resolution achieved for the fabrication of 3DP chemical reactors increases the conversion and productivity of the CO2 cycloaddition to epoxide.