“Sustainable open-source medical devices manufactured with green biomaterials and accessible resources”

Díaz Lantada, Andrés; De Maria, Carmelo

doi:10.1016/j.cobme.2023.100500

Cited by 3 publications

(2 citation statements)

References 43 publications

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“…This is primarily due to its cost-effectiveness and accessibility, making it a technology that can effortlessly produce affordable and customized products featuring geometrical complex structures [ 1 , 2 ]. Additionally, it includes online co-creation environments in which several documents of already designed products are shared by the “makers” movement [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Foaming of 3D-Printed PLA/CaCO3 Composites by Supercritical CO2 Process for Sustainable Food Contact Materials

Faba,

Agüero,

Arrieta

et al. 2024

Polymers

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In the last decade, among the emerging technologies in the area of bioplastics, additive manufacturing (AM), commonly referred to as 3D printing, stands out. This technology has gained great interest in the development of new products, mainly due to its capability to easily produce customized and low-cost plastic products. This work aims to evaluate the effect of supercritical foaming of 3D-printed parts based on a commercial PLA matrix loaded with calcium carbonate, for single-use sustainable food contact materials. 3D-printed PLA/CaCO3 parts were obtained by 3D printing with a 20% and 80% infill, and two infill patterns, rectilinear and triangular, were set for each of the infill percentages selected. Supercritical fluid foaming of PLA/CaCO3 composite printed parts was performed using a pressure of 25 MPa, a temperature of 130 °C for 23 min, with a fast depressurization rate (1 s). Closed-cell foams were achieved and the presence of CaCO3 did not influence the surface of the foams or the cell walls, and no agglomerations were observed. Foam samples with 80% infill showed subtle temperature fluctuations, and thermogravimetric analysis showed that samples were thermally stable up to ~300 °C, while the maximum degradation temperature was around 365 °C. Finally, tensile test analysis showed that for lower infill contents, the foams showed lower mechanical performance, while the 80% infill and triangular pattern produced foams with good mechanical performance. These results emphasize the interest in using the supercritical CO2 process to easily produce foams from 3D-printed parts. These materials represent a sustainable alternative for replacing non-biodegradable materials such as Expanded Polystyrene, and they are a promising option for use in many industrial applications, such as contact materials.

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Section: Introductionmentioning

confidence: 99%

Foaming of 3D-Printed PLA/CaCO3 Composites by Supercritical CO2 Process for Sustainable Food Contact Materials

Faba,

Agüero,

Arrieta

et al. 2024

Polymers

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“…With the rapid progress of 4D printing, the prevalence of eco-friendly, sustainable smart polymers from natural sources is gaining great interest in the field [24][25][26]. The exploitation of natural polymers is prompted by the fact that they possess enhanced biocompatibility and bioactivity if compared with synthetic materials, which makes it easier for natural polymers to be interfaced with biological systems, including living cells [27].…”

Section: Introductionmentioning

confidence: 99%

4D Printing Shape-Morphing Hybrid Biomaterials for Advanced Bioengineering Applications

Chiesa,

Ceccarini,

Bittolo Bon

et al. 2023

Materials

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Four-dimensional (4D) printing is an innovative additive manufacturing technology used to fabricate structures that can evolve over time when exposed to a predefined environmental stimulus. 4D printed objects are no longer static objects but programmable active structures that accomplish their functions thanks to a change over time in their physical/chemical properties that usually displays macroscopically as a shapeshifting in response to an external stimulus. 4D printing is characterized by several entangled features (e.g., involved material(s), structure geometry, and applied stimulus entities) that need to be carefully coupled to obtain a favorable fabrication and a functioning structure. Overall, the integration of micro-/nanofabrication methods of biomaterials with nanomaterials represents a promising approach for the development of advanced materials. The ability to construct complex and multifunctional triggerable structures capable of being activated allows for the control of biomedical device activity, reducing the need for invasive interventions. Such advancements provide new tools to biomedical engineers and clinicians to design dynamically actuated implantable devices. In this context, the aim of this review is to demonstrate the potential of 4D printing as an enabling manufacturing technology to code the environmentally triggered physical evolution of structures and devices of biomedical interest.

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Renewable Functional Materials Derived from Animal Wastes and Organic Garbage Waste to Wealth–A Green Innovation in Biomass Circular Bioeconomy

Thomas,

Neelima,

Archana

2024

Materials Horizons: From Nature to Nanomaterials

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“Sustainable open-source medical devices manufactured with green biomaterials and accessible resources”

Cited by 3 publications

References 43 publications

Foaming of 3D-Printed PLA/CaCO3 Composites by Supercritical CO2 Process for Sustainable Food Contact Materials

Foaming of 3D-Printed PLA/CaCO3 Composites by Supercritical CO2 Process for Sustainable Food Contact Materials

4D Printing Shape-Morphing Hybrid Biomaterials for Advanced Bioengineering Applications

Renewable Functional Materials Derived from Animal Wastes and Organic Garbage Waste to Wealth–A Green Innovation in Biomass Circular Bioeconomy

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