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In response to the need for environmentally friendly materials and solutions, this study adopts a sustainable approach to developing Polylactic Acid (PLA): Carbon Nanotube (CNT) nanocomposite feedstock and filaments, by replacing hazardous solvents and petroleum-based polymers with eco-friendly alternatives. A green solvent-based phase inversion technique was employed to produce PLA:CNT feedstock with varying CNT concentrations compatible with material extrusion 3D printing. This process was followed by filament fabrication and 3D printing using a desktop fused deposition modeling (FDM) printer, with subsequent mechanical and electrical analyses. FDM printed sample with 5 wt% of CNTs showed a conductivity of 3.39 × 10−2 S.m−1. Electrochemical surface activation was done on 3D-printed samples to improve the electrical properties of the printed parts and enhance their performance in electrochemical sensing applications, by removing the PLA layer from the surface and exposing CNTs. The results in the detection of ferro/ferricyanide redox probes using the activated samples demonstrated the effectiveness of the proposed eco-friendly approach in developing 3D-printed advanced bio-nanocomposite for sensing applications.

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Integrating Nanotechnology with Additive Manufacturing: Development of Eco-Friendly Carbon Nanotube-Reinforced Polymeric Bio-Nanocomposites for Material Extrusion 3D Printing

  • 会议论文

  • 发表日期：

    2025年

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  • Javid Sharifi,
  • Haniyeh Ramona Fayazfar,
  • Ghaus Rizvi

摘要

In response to the need for environmentally friendly materials and solutions, this study adopts a sustainable approach to developing Polylactic Acid (PLA): Carbon Nanotube (CNT) nanocomposite feedstock and filaments, by replacing hazardous solvents and petroleum-based polymers with eco-friendly alternatives. A green solvent-based phase inversion technique was employed to produce PLA:CNT feedstock with varying CNT concentrations compatible with material extrusion 3D printing. This process was followed by filament fabrication and 3D printing using a desktop fused deposition modeling (FDM) printer, with subsequent mechanical and electrical analyses. FDM printed sample with 5 wt% of CNTs showed a conductivity of 3.39 × 10−2 S.m−1. Electrochemical surface activation was done on 3D-printed samples to improve the electrical properties of the printed parts and enhance their performance in electrochemical sensing applications, by removing the PLA layer from the surface and exposing CNTs. The results in the detection of ferro/ferricyanide redox probes using the activated samples demonstrated the effectiveness of the proposed eco-friendly approach in developing 3D-printed advanced bio-nanocomposite for sensing applications.