Thermal annealing effects on the mechanical properties of bio-based 3D printed thermosets

Abstract

3D printing technologies can address many sustainability aspects of creating new materials, such as reduced waste and on demand production, which reduces the carbon footprint of transport and storage. Additionally,...

Synthesis of bio-sourced liquid resins and their photopolymerization with poly(ethylene glycol) diacrylate in the roadmap to more sustainable digital light processing technologies

“…Even after light irradiation at 460 nm for 12 h, DAM : PEGDA and DAT : PEGDA still lose weight at around 240 °C, whereas DAS : PEGDA remains stable until 330 °C with only one decay at a maximum T of 440 °C and a char yield of 3% at 600 °C. Cortés-Guzmán et al 45 recently described similar thermal properties for a monofunctional guaiacol glycidyl ether acrylate monomer (GuGEA) photopolymerized with diglycidyl ether of vanillyl alcohol (DGEVDA), a bi-functional crosslinker. In their example, the thermal properties were slightly improved with annealing treatment and they could also be modulated with a higher content of DGEVDA.…”

Sustainable Vat Photopolymerization‐Based 3D‐Printing through Dynamic Covalent Network Photopolymers

“…One example of a self-healing photopolymer is based on the biobased printable polymer resin developed by Cortés-Guzmán and co-workers. [45] This work focuses on three different formulations of resin, incorporating vanillin glycidyl ether (VGEA), eugenol glycidyl ether (EGEA), guaiacol glycidyl ether (GuGEA), and vanillyl alcohol, with diglycidyl ether of vanillyl alcohol (DGEVA) serving as the bio-based crosslinker. In this formulation, zinc acetylacetonate (Zn(acac) 2 ) is introduced as an additive, designed to yield thermosets with the capability of self-healing and recycling through dynamic transesterification reactions.…”

“…Reproduced with permission. [45] printing. [48] The formulation included key components such as 2-(tert-Butyl Amino) ethyl methacrylate, n-butyl acrylate, I819 photoinitiator, and hexamethylene diisocyanate as a crosslinker.…”

“…One example of a self‐healing photopolymer is based on the biobased printable polymer resin developed by Cortés‐Guzmán and co‐workers [45] . This work focuses on three different formulations of resin, incorporating vanillin glycidyl ether (VGEA), eugenol glycidyl ether (EGEA), guaiacol glycidyl ether (GuGEA), and vanillyl alcohol, with diglycidyl ether of vanillyl alcohol (DGEVA) serving as the bio‐based crosslinker.…”

“…The outcomes subsequent to heat treatment at 120 °C and 180 °C for 16 hours are also demonstrated, with a scale bar of 400 μm. Reproduced with permission [45] …”