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Procedure for Fabricating Biofunctional Nanofibers

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3D-Printed Nanocarbon Polymer Conductive Structures for Electromagnetic Interference Shielding.

Shidhin Mappoli¹, Keval K Sonigara¹, Suvani Subhadarshini¹

¹Future Energy and Innovation Laboratory, Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno, 61200, Czech Republic.

|March 17, 2025

Summary

This summary is machine-generated.

3D-printed polylactic acid (PLA) composites with carbon nanotubes and polyaniline coatings offer superior electromagnetic interference (EMI) shielding. This lightweight, corrosion-resistant material provides an effective alternative to traditional metal shields.

Keywords:

3D printing EMI shielding electrodeposition fused deposition modelling polyaniline

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Area of Science:

Materials Science
Electrical Engineering
Nanotechnology

Background:

Electromagnetic interference (EMI) degrades electronic device performance.
Traditional metallic shielding materials are dense, inflexible, and prone to corrosion.
There is a need for advanced, lightweight, and sustainable EMI shielding solutions.

Purpose of the Study:

To investigate the EMI shielding properties of 3D-printed polylactic acid (PLA) composites.
To evaluate the impact of carbon black (CB) and carbon nanotube (CNT) fillers on EMI shielding.
To enhance EMI shielding effectiveness through polyaniline (PANI) electrodeposition.

Main Methods:

Fabrication of 3D-printed PLA composites with CB and CNT fillers.
Characterization of EMI shielding effectiveness (SE) using electromagnetic measurements.
Electrodeposition of PANI onto CNT/PLA structures to further improve SE.

Main Results:

CNT/PLA composites achieved an SE of 43 dB at 10 GHz, outperforming CB/PLA (22 dB).
PANI electrodeposition on CNT/PLA structures boosted SE to 54.5 dB at 10 GHz.
3D-printed composites demonstrated lightweight properties and enhanced corrosion resistance.

Conclusions:

3D-printed PLA composites with CNT and PANI offer high EMI shielding effectiveness.
PANI electrodeposition provides a tunable method for enhancing SE in 3D-printed materials.
These materials present a sustainable and high-performance alternative to conventional metallic shielding.