Radical, cationic and click-reaction photopolymerization of vegetable oil-based resin for shape memory polymers Sergejs Gaidukovs , Anda Barkane, Sabine Briede, Vladislavs Buivids Riga Technical University, Latvia The current presentation deals with the molecular design and formulation of these UV-light, curable functional polymer materials. Herrin, we report the synthesis of rapeseed oil-based acrylate and epoxide light-sensitive polymeric resins, their formulation, and their thermal and UV-light dual-cure. The light sensitives moieties such as acrylate and oxirane groups incorporated into the vegetable oil triglycerides can be selectively crosslinked during light processing. Controlled radical and cationic-initiated living polymerization and thiol-ene crosslinking results in regulated crosslinked polymer chain networks. The controlled crosslinked macromolecular chain networks produced the thermoset biopolymer materials with adjusted physical and mechanical properties. The developed polymer material is characterized by shape-memory functionality. The obtained biopolymer resins are successfully 3D printing manufactured into three-dimensional shapes and objects. Vat UV-stereolithography or UV-light-assisted extrusion 3D printing concepts have been tested for the obtained vegetable oil resins. The obtained biopolymer resin materials can be used in sensor-actuator applications. References 1. Barkane A., Platnieks O., Jurinovs M., Kasetaite S., Ostrauskaite J., Gaidukovs S., Habibi Y. Uv-light curing of 3d printing inks from vegetable oils for stereolithography (2021) Polymers, 13 (8), art. no. 1195. 2. Briede S., Jurinovs M., Nechausov S., Platnieks O., Gaidukovs S. State-of-the-art UV-assisted 3D printing via a rapid syringe-extrusion approach for photoactive vegetable oil acrylates produced in one-step synthesis (2022) Molecular Systems Design and Engineering, 7 (11), pp. 1434 - 1448. 3. Barkane A., Kampe E., Gaidukovs S. New Reinforcing Approach for Biobased UV-Curing Resins: Hybrid Lignocellulose Fillers with Improved Synergy and Wood Structure Mimics (2023) ACS Sustainable Chemistry and Engineering, 11 (17), pp. 6578 - 6591.
P20
© The Author(s), 2023
Made with FlippingBook Learn more on our blog