State-of-the-art UV-assisted 3D printing via a rapid syringe-extrusion approach for photoactive vegetable oil acrylates produced in one-step synthesis

Abstract

We introduce a UV-assisted syringe-extrusion based approach for vegetable oil acrylates. On-demand 3D printing can be achieved with exact and low amounts (just a few milliliters) of resin by employing a low-cost system suitable for design freedom.

Three Dimensionally Printed Biobased Electrodes: Ionic Liquid and Single-Walled Carbon Nanotube Hybrids in a Vegetable Oil Matrix for Soft Robotics

“…Commonly, resins without fillers and those based on vegetable oil express a typical Newtonian flow. 26,27 The same behavior is observed for the 0% resin in Figure 1, where the viscosity is constant through all shear rate values. For VP formulations incorporating fillers, resins should remain stable, maintain low viscosity, and be homogeneous.…”

“…The improved flexibility of the proposed materials is related to the overall lower elastic modulus of acrylated vegetable oil matrix, reported in the literature. 26,33 Despite this, flexibility serves as an advantage if this composition would be used for sensors or electrodes in soft robotics as flexibility is one of the main requirements for these fields. 9,13 For an in-depth insight into the 3D printed sample morphology, 200 μm-thick 3D-printed films were investigated at different magnifications by photography, optical microscopy, and SEM micrographs, as presented in Figure S1.…”

Biobased and degradable thiol–ene networks from levoglucosan for sustainable 3D printing

“…To mitigate the production and accumulation of 3D printed plastic waste, it is crucial that 3D printing resins that are both renewably sourced and degradable are developed. 19 Renewable feedstocks such as natural phenolics (eugenol, vanillin, guaiacol), 21 succinic and itaconic acid, 22 glycerol, 23 and vegetable oils, 24 have been used to create 3D printing resins via acrylation, typically resulting in nondegradable carbon-carbon bond backbones after free-radical crosslinking. Due to its many advantages, thiol-ene photopolymerization is also gradually being explored in additive manufacturing resins.…”

“…20,30,31 As compared to SLA/DLP type 3D printers, which generally require a relatively large amount of resin for printing, DIW printers only require enough resin for the end-product. 24,32 Low printing resin volume is particularly beneficial for material development and is also amenable to the translation of laboratory scale synthesized biobased resins to commercial 3D printing. 24 Moreover, low printing resin volume can help reduce the amount of 3D printing waste since partial curing of the photopolymer in the resin tank can occur in SLA/DLP type printers, thereby often requiring the use of fresh resin for consistent properties.…”

“…24,32 Low printing resin volume is particularly beneficial for material development and is also amenable to the translation of laboratory scale synthesized biobased resins to commercial 3D printing. 24 Moreover, low printing resin volume can help reduce the amount of 3D printing waste since partial curing of the photopolymer in the resin tank can occur in SLA/DLP type printers, thereby often requiring the use of fresh resin for consistent properties. In addition, DIW has low equipment cost and can also be easily used for multi-material printing, allowing for the fabrication of composites and materials with highly tunable properties.…”