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UV-Light Curing of 3D Printing Inks from Vegetable Oils for Stereolithography

Typical resins for UV-assisted additive manufacturing (AM) are prepared from petroleum-based materials and therefore do not contribute to the growing AM industry trend of converting to sustainable bio-based materials. To satisfy society and industry’s demand for sustainability, renewable feedstocks...

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Autores principales: Barkane, Anda, Platnieks, Oskars, Jurinovs, Maksims, Kasetaite, Sigita, Ostrauskaite, Jolita, Gaidukovs, Sergejs, Habibi, Youssef
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8068002/
https://www.ncbi.nlm.nih.gov/pubmed/33917193
http://dx.doi.org/10.3390/polym13081195
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author Barkane, Anda
Platnieks, Oskars
Jurinovs, Maksims
Kasetaite, Sigita
Ostrauskaite, Jolita
Gaidukovs, Sergejs
Habibi, Youssef
author_facet Barkane, Anda
Platnieks, Oskars
Jurinovs, Maksims
Kasetaite, Sigita
Ostrauskaite, Jolita
Gaidukovs, Sergejs
Habibi, Youssef
author_sort Barkane, Anda
collection PubMed
description Typical resins for UV-assisted additive manufacturing (AM) are prepared from petroleum-based materials and therefore do not contribute to the growing AM industry trend of converting to sustainable bio-based materials. To satisfy society and industry’s demand for sustainability, renewable feedstocks must be explored; unfortunately, there are not many options that are applicable to photopolymerization. Nevertheless, some vegetable oils can be modified to be suitable for UV-assisted AM technologies. In this work, extended study, through FTIR and photorheology measurements, of the UV-curing of epoxidized acrylate from soybean oil (AESO)-based formulations has been performed to better understand the photopolymerization process. The study demonstrates that the addition of appropriate functional comonomers like trimethylolpropane triacrylate (TMPTA) and the adjusting of the concentration of photoinitiator from 1% to 7% decrease the needed UV-irradiation time by up to 25%. Under optimized conditions, the optimal curing time was about 4 s, leading to a double bond conversion rate (DBC%) up to 80% and higher crosslinking density determined by the Flory–Rehner empirical approach. Thermal and mechanical properties were also investigated via TGA and DMA measurements that showed significant improvements of mechanical performances for all formulations. The properties were improved further upon the addition of the reactive diluents. After the thorough investigations, the prepared vegetable oil-based resin ink formulations containing reactive diluents were deemed suitable inks for UV-assisted AM, giving their appropriate viscosity. The validation was done by printing different objects with complex structures using a laser based stereolithography apparatus (SLA) printer.
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spelling pubmed-80680022021-04-25 UV-Light Curing of 3D Printing Inks from Vegetable Oils for Stereolithography Barkane, Anda Platnieks, Oskars Jurinovs, Maksims Kasetaite, Sigita Ostrauskaite, Jolita Gaidukovs, Sergejs Habibi, Youssef Polymers (Basel) Article Typical resins for UV-assisted additive manufacturing (AM) are prepared from petroleum-based materials and therefore do not contribute to the growing AM industry trend of converting to sustainable bio-based materials. To satisfy society and industry’s demand for sustainability, renewable feedstocks must be explored; unfortunately, there are not many options that are applicable to photopolymerization. Nevertheless, some vegetable oils can be modified to be suitable for UV-assisted AM technologies. In this work, extended study, through FTIR and photorheology measurements, of the UV-curing of epoxidized acrylate from soybean oil (AESO)-based formulations has been performed to better understand the photopolymerization process. The study demonstrates that the addition of appropriate functional comonomers like trimethylolpropane triacrylate (TMPTA) and the adjusting of the concentration of photoinitiator from 1% to 7% decrease the needed UV-irradiation time by up to 25%. Under optimized conditions, the optimal curing time was about 4 s, leading to a double bond conversion rate (DBC%) up to 80% and higher crosslinking density determined by the Flory–Rehner empirical approach. Thermal and mechanical properties were also investigated via TGA and DMA measurements that showed significant improvements of mechanical performances for all formulations. The properties were improved further upon the addition of the reactive diluents. After the thorough investigations, the prepared vegetable oil-based resin ink formulations containing reactive diluents were deemed suitable inks for UV-assisted AM, giving their appropriate viscosity. The validation was done by printing different objects with complex structures using a laser based stereolithography apparatus (SLA) printer. MDPI 2021-04-07 /pmc/articles/PMC8068002/ /pubmed/33917193 http://dx.doi.org/10.3390/polym13081195 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Barkane, Anda
Platnieks, Oskars
Jurinovs, Maksims
Kasetaite, Sigita
Ostrauskaite, Jolita
Gaidukovs, Sergejs
Habibi, Youssef
UV-Light Curing of 3D Printing Inks from Vegetable Oils for Stereolithography
title UV-Light Curing of 3D Printing Inks from Vegetable Oils for Stereolithography
title_full UV-Light Curing of 3D Printing Inks from Vegetable Oils for Stereolithography
title_fullStr UV-Light Curing of 3D Printing Inks from Vegetable Oils for Stereolithography
title_full_unstemmed UV-Light Curing of 3D Printing Inks from Vegetable Oils for Stereolithography
title_short UV-Light Curing of 3D Printing Inks from Vegetable Oils for Stereolithography
title_sort uv-light curing of 3d printing inks from vegetable oils for stereolithography
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8068002/
https://www.ncbi.nlm.nih.gov/pubmed/33917193
http://dx.doi.org/10.3390/polym13081195
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