Visible Light 3D Printing of High-Resolution Superelastic Microlattices of Poly(ethylene glycol) Diacrylate/Graphene Oxide Nanocomposites via Continuous Liquid Interface Production

Abstract

Continuous liquid interface production (CLIP) has been regarded as a revolutionary three-dimensional (3D) printing technology capable of continuously creating complex structures with both high resolution and fast speed. However, it highly relies on the UV light source, which is costly and not applicable for some end uses. Herein, a novel photocurable ink containing biocompatible poly­(ethylene glycol) diacrylate (PEGDA) and graphene oxide (GO) was demonstrated in successful CLIP 3D printing with a cheap visible light source. GO not only works as a photoabsorber for significant enhancement of visible light absorbance to realize high-resolution CLIP printing but also reinforces the polymer matrix to achieve high mechanical properties of the final products. Of note, the CLIP-printed microlattices with a microtexture as thin as 100 μm exhibited fantastic superelastic features coupled with outstanding mechanical performance. Remarkably, the microlattice prints with custom geometries could survive from 90% compressive strain, indicating their stunning superelasticity.

3D Printing‐Enabled Design and Manufacturing Strategies for Batteries: A Review

“…As a result, CLIP supports various production materials, such as cross-linkable monomers, rigid ceramics, and biological materials. [41,42] However, CLIP has still been slower than conventional methods, such as injection molding or mold casting. Therefore, in 2022 DeSimone et al enhanced the CLIP design to the injection continuous liquid interface production (iCLIP), where a direct injection into the "dead zone" alleviates suction forces to accelerate printing speed up to five to ten folds over CLIP.…”

Photochemically Activated 3D Printing Inks: Current Status, Challenges, and Opportunities

“…(Meth)acrylate monomers such as-or derivatives thereoftriethylene glycol di(meth)acrylate (TEGMA/PEGDA), [111][112][113] trimethylolpropane triacrylate [114,115] and pentaerythritol tri-or tetra-acrylate (PETA and PETTA) [99,[116][117][118][119] are commonly used owing to their commercial availability and relatively large propagation-rate coefficients (Figure 5). [120] In addition, these monomers are viscous liquids, enabling them to dissolve small quantities of photoinitiator, which simplifies the formulation of the photoresist.…”

Additive Manufacturing of Advanced Ceramics Using Preceramic Polymers

“…Unlike other VP processes, a UV transparent dead zone is created by an oxygen-permeable window (oxygen-impaired photopolymerization region) between the light projector and the resin layer that needs to be cured [ 74 , 76 ]. The continuous printing nature of CLIP is key to printing layerless parts compared to other VP processes [ 77 ]. However, the lateral resolution of CLIP is usually constrained because of the limited pixel size of the LCD light [ 76 ].…”