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The International Journal of Advanced Manufacturing Technology

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28-02-2024 | ORIGINAL ARTICLE

Sustainable 3D printing of enhanced carbon nanotube-based polymeric nanocomposites: green solvent-based casting for eco-friendly electrochemical sensing applications

Authors: Javid Sharifi, Ghaus Rizvi, Haniyeh (Ramona) Fayazfar

Published in: The International Journal of Advanced Manufacturing Technology | Issue 9-10/2024

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Abstract

The current study investigates an eco-friendly solution casting method using a green solvent, Cyrene, for 3D printing polylactic acid (PLA) nanocomposites reinforced with carbon nanotubes (CNTs), for the first time. The approach which emphasizes ecological sustainability and energy efficiency, involves using a low-cost desktop fused deposition modeling (FDM) 3D printer for 3D printing of developed nanocomposite. The addition of just 3 wt.% CNTs to the polymer increased the composite electrical conductivity, from a baseline of 2.1 × 10⁻¹² S m⁻¹ in virgin PLA to 1.8 × 10⁻⁹ S m⁻¹. Morphological analysis showed well-distributed CNT fillers across the filament cross-section and on the surface of the 3D printed parts. The mechanical properties of the printed samples revealed a significant improvement in tensile strength and modulus, with 22.8% and 7.41% increase, respectively. To enhance the electrical conductivity and sensing capabilities for detecting ferro/ferricyanide redox probes, an electrochemical surface activation treatment was applied to the as-printed parts. This method removed the PLA layer from the surface, exposing CNTs and improving the composite’s overall performance. The successful results of this study illustrate a promising environmentally friendly approach to develop advanced nanocomposite material, based on biodegradable PLA and conductive CNTs, with the aid of low-cost 3D printing for electrochemical sensing applications.

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Title: Sustainable 3D printing of enhanced carbon nanotube-based polymeric nanocomposites: green solvent-based casting for eco-friendly electrochemical sensing applications
Authors: Javid Sharifi
Ghaus Rizvi
Haniyeh (Ramona) Fayazfar
Publication date: 28-02-2024
Publisher: Springer London
Published in: The International Journal of Advanced Manufacturing Technology / Issue 9-10/2024
Print ISSN: 0268-3768
Electronic ISSN: 1433-3015
DOI: https://doi.org/10.1007/s00170-024-13337-w

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