Synthesis of biobased photocurable resin and exploitation in 3D printing

• Grant number: 24/03936-1
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• Start date: October 01, 2024
• End date: September 30, 2025
• Field of knowledge: Physical Sciences and Mathematics - Chemistry
• Principal Investigator: Éder Tadeu Gomes Cavalheiro
• Grantee: Rafael Turra Alarcon
• Supervisor: Marco Sangermano
• Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Institution abroad: Politecnico di Torino, Italy
• Associated to the scholarship: 21/14879-0 - New synthetic method of poly-hidroxyurethanes from triacylglycerol using catalysts or triacylmelamine to inhibition side reactions, BP.PD

Abstract

This project aims to synthesize and characterize new monomers and polymers using vegetable oil from macaw palm, grapeseed and castor. These vegetable oils will be chemically modified by maleinization, epoxidation, and acrylation reactions. The emphasis is to aggregate value for bio-commodities, by modifying them into new materials, always following the Green Chemistry Principles. The work consists of two parts. The first is the modification of vegetable oil for monomers. The second part is performing new formulations to be applied in 3D printing by the photopolymerization process. The formulation will be prepared to be used in dual cure systems, in which the polymer is polymerized by light followed by a final polymerization by thermal process. The thermal process enhances the polymer cross-linking, which can improve some physical features such as mechanical, luminescent, shape memory or solvent resistance. Mid-Infrared Spectroscopy (MIR), and Nuclear Magnetic Resonance (NMR) will be used to characterize all the monomers. Simultaneous Thermogravimetry/Derivative Thermogravimetry-Differential Thermal Analysis (TG/DTG-DTA), Differential Scanning Calorimetry (DSC) and Dynamic Mechanical Analysis (DMA) will be used to characterize the thermal and mechanical propriety of these polymers before and after thermal cure. Finally, these polymers will be tested regarding properties such as fluorescent, shape memory, self-healing and coating materials.

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ALARCON, RAFAEL TURRA; CELLAI, ALBERTO; SCHMITT, CARLA CRISTINA; CAVALHEIRO, EDER TADEU GOMES; SANGERMANO, MARCO. Ternary formulations of bio-based grapeseed oil-based monomers for 3D printing: Effect of thiol-ene reaction on acrylic radical photopolymerization. EUROPEAN POLYMER JOURNAL, v. 235, p. 12-pg., 2025-07-18. (22/15211-6, 24/03936-1, 21/14879-0)

DOS SANTOS, GABRIEL I.; GAGLIERI, CAROLINE; ALARCON, RAFAEL T.; DE MOURA, ANIELE; DOS SANTOS, FERNANDA B.; BANNACH, GILBERT. Glycerol and Maleic Anhydride-Based Acrylic Polyester: A Solution for Greener Photocurable Resins for 3D Printing of Renewable Materials. ACS SUSTAINABLE CHEMISTRY & ENGINEERING, v. 13, n. 25, p. 12-pg., 2025-06-12. (24/00779-2, 24/03936-1, 21/14879-0, 24/14279-1, 23/14645-5)

ALARCON, RAFAEL TURRA; PORCARELLO, MATILDE; CELLAI, ALBERTO; SCHMITT, CARLA CRISTINA; SANGERMANO, MARCO. Advancing green additive manufacturing: Epoxidized vegetable oils for room-temperature photopolymerization 3D printing. Polymer, v. 336, p. 14-pg., 2025-10-13. (24/03936-1, 21/14879-0)

ALARCON, RAFAEL TURRA; BERGOGLIO, MATTEO; CAVALHEIRO, EDER TADEU GOMES; SANGERMANO, MARCO. Thiol-Ene Photopolymerization and 3D Printing of Non-Modified Castor Oil Containing Bio-Based Cellulosic Fillers. POLYMERS, v. 17, n. 5, p. 19-pg., 2025-03-01. (24/03936-1, 22/15211-6, 21/14879-0)