Author, as appears in the article.: Grauzeliene, Sigita; Navaruckiene, Aukse; Skliutas, Edvinas; Malinauskas, Mangirdas; Serra, Angels; Ostrauskaite, Jolita
Department: Química Analítica i Química Orgànica
URV's Author/s: Serra Albet, Maria Angels
Keywords: Ultraviolet lasers Thiol-epoxy Thiol-ene Thermosets Thermogravimetric analysis Thermoanalysis Thermal post-treatments Thermal polymerizations Thermal and mechanical properties Tensile strength Temperature Soybean oil Resins Polymers Photoinitiator Petroleum-based materials Optical 3d printing Oilseeds Networks Monomers Mechanical testing Linseed oil Laser direct writing Image enhancement Eugenol Epoxidized soybean oil Epoxidized linseed oil Dynamic mechanical thermal analysis Dual curing Drying oils Curing Coatings Click reactions Bisphenol-a-diglycidyl ethers Bisphenol-a Biobased polymer Binary alloys Acrylated epoxidized soybean oil 3d printers
Abstract: The use of renewable sources for optical 3D printing instead of petroleum-based materials is increasingly growing. Combinations of photo- and thermal polymerization in dual curing processes can enhance the thermal and mechanical properties of the synthesized thermosets. Consequently, thiol-ene/thiol-epoxy polymers were obtained by combining UV and thermal curing of acrylated epoxidized soybean oil and epoxidized linseed oil with thiols, benzene-1,3-dithiol and pentaerythritol tetra(3-mercaptopropionate). Thiol-epoxy reaction was studied by calorimetry. The changes of rheological properties were examined during UV, thermal and dual curing to select the most suitable formulations for laser direct writing (LDW). The obtained polymers were characterized by dynamic-mechanical thermal analysis, thermogravimetry, and mechanical testing. The selected dual curable mixture was tested in LDW 3D lithography for validating its potential in optical micro- and nano-additive manufacturing. The obtained results demonstrated the suitability of epoxidized linseed oil as a biobased alternative to bisphenol A diglycidyl ether in thiol-epoxy thermal curing reactions. Dual cured thermosets showed higher rigidity, tensile strength, and Young's modulus values compared with UV-cured thiol-ene polymers and the highest thermal stability from all prepared polymers. LDW results proved their suitability for high resolution 3D printing-individual features reaching an unprecedented 100 nm for plant-based materials. Finally, the biobased resin was tested for thermal post-treatment and 50% feature downscaling was achieved.
Thematic Areas: Polymers and plastics Polymer science Odontología General chemistry Farmacia Engenharias ii Ciências biológicas ii Chemistry (miscellaneous) Chemistry (all) Biotecnología Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: angels.serra@urv.cat
Author identifier: 0000-0003-1387-0358
Record's date: 2024-11-02
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://www.mdpi.com/2073-4360/13/6/872
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Polymers. 13 (6): 872-
APA: Grauzeliene, Sigita; Navaruckiene, Aukse; Skliutas, Edvinas; Malinauskas, Mangirdas; Serra, Angels; Ostrauskaite, Jolita (2021). Vegetable Oil-Based Thiol-Ene/Thiol-Epoxy Resins for Laser Direct Writing 3D Micro-/Nano-Lithography. Polymers, 13(6), 872-. DOI: 10.3390/polym13060872
Article's DOI: 10.3390/polym13060872
Entity: Universitat Rovira i Virgili
Journal publication year: 2021
Publication Type: Journal Publications