RT journal article
T1 Myrcene-itaconate Diels-Alder cycloadducts in the synthesis of photocurable polyesters for the 3D printing of fully biobased resins
A1 Maturi, Mirko
A1 Spanu, Chiara
A1 Locatelli, Erica
A1 Sambri, Letizia
A1 Comes Franchini, Mauro
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 Vat photopolymerization
K1 Biobased resin
K1 Terpenes
K1 Itaconic acid
K1 Diels-Alder cycloaddition
AB Photopolymerization-based 3D printing techniques, such as vat photopolymerization (VP), unfortunately still strongly rely on the use of fossil-based (meth)acrylate monomers for the formulation of photo hardening resins. Because of that many researchers have recently directed their efforts towards the replacement of methacrylic and acrylic acid derivatives with biobased counterparts. Indeed, in this work, we introduce a novel approach for producing sixteen fully biobased resins for VP, based on photocurable polyesters synthesized starting from bio-sourced reagents. Itaconic acid, widely recognized as an effective biobased photocurable monomer, and myrcene, a terpene consisting of two isoprene units, are employed in a Diels-Alder cycloaddition to achieve a co-monomer (My-DMI) for the new photocurable polyesters. By exploring various molecular weights, diols and ratios between itaconate and My-DMI, we synthesized eight different polyesters. By combining these with appropriately designed reactive diluents, we successfully tuned the mechanical properties of the 3D printed materials, ranging from very flexible to extremely rigid, depending on the diol chain length and itaconate contents. Additionally, we provide a detailed evaluation of the biobased content of each formulation according to the OK BIOBASED labelling for plastics, finding biobased content as high as 97 % in most cases.
PB Elsevier
SN 2214-8604
YR 2024
FD 2024
LK http://hdl.handle.net/10498/37162
UL http://hdl.handle.net/10498/37162
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026