PETG: Applications in Modern Medicine

Yan, Catherine; Kleiner, Corinne; Tabigue, Aaron; Shah, Veer; Sacks, Gregory; Shah, Darshi; DeStefano, Vincent

doi:10.1016/j.engreg.2023.11.001

Cited by 8 publications

(7 citation statements)

References 63 publications

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“…PET-G is also used as a building façade material in some studies regarding 3D-printed building façade solutions [44,45]. Since PET-G is non-toxic, bio-compatible, UV-resistant, and food-safe, it is used in healthcare and food industries [46,47]. Meanwhile, thermoplastic polyurethane (TPU), representing 7% to 8% of the panel's total weight, was used as a flexible material to be used on the surfaces connecting the panel to the pre-existing façade and in the connection between panels.…”

Section: Methodsmentioning

confidence: 99%

A Holistic Modular Solution for Energy and Seismic Renovation of Buildings Based on 3D-Printed Thermoplastic Materials

Lopes,

Penazzato,

Reis

et al. 2024

Sustainability

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This paper introduces a novel modular retrofitting solution to enhance the energy efficiency and seismic resilience of building façades, particularly within the Portuguese context. In the context of Europe’s “Renovation Wave” strategy, and as a product of the nationally funded ZeroSkin+ project, the proposed renovation solution addresses the urgent need for sustainable building renovations to help mitigate climate change and meet European climate neutrality goals by 2050. Unlike traditional methods that often rely on non-eco-friendly materials without integrating seismic and thermal performances, the renovation solution leverages fused deposition modelling (FDM) 3D printing technology to introduce a dual-layered panel system. This system features a durable, UV-resistant PET-G thermoplastic outer layer and a cork interior to ensure additional thermal insulation. The integrated renovation solution shows a 42% improvement in seismic reinforcement’s out-of-plane capacity and achieves U-values as low as 0.30 W/m2·K, exceeding Portugal’s thermal efficiency standards (0.35 to 0.50 W/m2·K). The proposed renovation solution also embraces circular economy principles, emphasising waste reduction and recyclability.

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Section: Methodsmentioning

confidence: 99%

A Holistic Modular Solution for Energy and Seismic Renovation of Buildings Based on 3D-Printed Thermoplastic Materials

Lopes,

Penazzato,

Reis

et al. 2024

Sustainability

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“…It possesses some advanced properties compared to PET, such as chemical alkali resistance, high shrinkage, transparency, gloss, low haze, good printability [ 38 ], and processability, along with the ability to be easily mixed with blends [ 39 ]. It can be useful in applications that require more enhanced mechanical properties than PET; moreover, its 3D-printing FFF process is easy to use, and it can be utilized for food packaging [ 38 ], engineering [ 40 ], and medical applications [ 41 ], among others.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Effectiveness of Silicon Nitride as a Reinforcement Agent for Polyethylene Terephthalate Glycol in Material Extrusion 3D Printing

Michailidis,

Petousis,

Saltas

et al. 2024

Polymers

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Polyethylene terephthalate glycol (PETG) and silicon nitride (Si3N4) were combined to create five composite materials with Si3N4 loadings ranging from 2.0 wt.% to 10.0 wt.%. The goal was to improve the mechanical properties of PETG in material extrusion (MEX) additive manufacturing (AM) and assess the effectiveness of Si3N4 as a reinforcing agent for this particular polymer. The process began with the production of filaments, which were subsequently fed into a 3D printer to create various specimens. The specimens were manufactured according to international standards to ensure their suitability for various tests. The thermal, rheological, mechanical, electrical, and morphological properties of the prepared samples were evaluated. The mechanical performance investigations performed included tensile, flexural, Charpy impact, and microhardness tests. Scanning electron microscopy and energy-dispersive X-ray spectroscopy mapping were performed to investigate the structures and morphologies of the samples, respectively. Among all the composites tested, the PETG/6.0 wt.% Si3N4 showed the greatest improvement in mechanical properties (with a 24.5% increase in tensile strength compared to unfilled PETG polymer), indicating its potential for use in MEX 3D printing when enhanced mechanical performance is required from the PETG polymer.

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“…A variety of polymers have been proposed for medical applications. Given its unique characteristic as biomaterial, PETG (poly(ethylene glycol-co-cyclohexane-1,4-dimethanol terephthalate)) is being actively researched in tissue engineering, dentistry, optometry, Polymers 2024, 16, 1567 2 of 22 orthopedics, and vascular health, among others [2]. This polymer is biocompatible, noncytotoxic, and compliant with the food exposure standards of the FDA [3].…”

Section: Introductionmentioning

confidence: 99%

Supercritical Impregnation of PETG with Olea europaea Leaf Extract: Influence of Operational Parameters on Expansion Degree, Antioxidant and Mechanical Properties

Machado,

Mosquera,

Cejudo-Bastante

et al. 2024

Polymers

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PETG (poly(ethylene glycol-co-cyclohexane-1,4-dimethanol terephthalate)) is an amorphous copolymer, biocompatible, recyclable, and versatile. Nowadays, it is being actively researched for biomedical applications. However, proposals of PETG as a platform for the loading of bioactive compounds from natural extract are scarce, as well as the effect of the supercritical impregnation on this polymer. In this work, the supercritical impregnation of PETG filaments with Olea europaea leaf extract was investigated, evaluating the effect of pressure (100–400 bar), temperature (35–55 °C), and depressurization rate (5–50 bar min−1) on the expansion degree, antioxidant activity, and mechanical properties of the resulting filaments. PETG expansion degree ranged from ~3 to 120%, with antioxidant loading ranging from 2.28 to 17.96 g per 100 g of polymer, corresponding to oxidation inhibition values of 7.65 and 66.55%, respectively. The temperature and the binary interaction between pressure and depressurization rate most affected these properties. The mechanical properties of PETG filaments depended greatly on process variables. Tensile strength values were similar or lower than the untreated filaments. Young’s modulus and elongation at break values decreased below ~1000 MPa and ~10%, respectively, after the scCO2 treatment and impregnation. The extent of this decrease depended on the supercritical operational parameters. Therefore, filaments with higher antioxidant activity and different expansion degrees and mechanical properties were obtained by adjusting the supercritical processing conditions.

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PETG: Applications in Modern Medicine

Cited by 8 publications

References 63 publications

A Holistic Modular Solution for Energy and Seismic Renovation of Buildings Based on 3D-Printed Thermoplastic Materials

A Holistic Modular Solution for Energy and Seismic Renovation of Buildings Based on 3D-Printed Thermoplastic Materials

Investigation of the Effectiveness of Silicon Nitride as a Reinforcement Agent for Polyethylene Terephthalate Glycol in Material Extrusion 3D Printing

Supercritical Impregnation of PETG with Olea europaea Leaf Extract: Influence of Operational Parameters on Expansion Degree, Antioxidant and Mechanical Properties

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