Enhanced Electromagnetic Interference Shielding Performance of Sisal Fiber/Polypropylene Composites with RGO-Fe₃O₄...

Area of Science:

• Materials Science
• Nanotechnology
• Electromagnetics

Background:

• Electromagnetic interference (EMI) poses challenges in electronic devices.
• Developing effective EMI shielding materials is crucial for device performance and longevity.
• Graphene-based nanocomposites offer promising properties for EMI shielding applications.

Purpose of the Study:

• To synthesize reduced graphene oxide (RGO)-Fe3O4 nanohybrids.
• To evaluate the EMI shielding effectiveness of RGO-Fe3O4/SF/PP composites.
• To investigate the synergistic effects and shielding mechanisms of the nanohybrids.

Main Methods:

• Solvothermal reduction method for nanohybrid synthesis.
• Characterization using SEM, TEM, XRD, Raman spectroscopy, and VSM.
• Measurement of EMI shielding effectiveness (SE) in the 8-12 GHz range.

Main Results:

• Successful synthesis of RGO-Fe3O4 nanohybrids.
• RGO-Fe3O4/SF/PP composite exhibited significantly higher EMI SE than Fe3O4/SF/PP composite.
• Maximum EMI SE of 80.44% achieved with increasing RGO-Fe3O4 content.
• Dominant shielding mechanism identified as absorption.

Conclusions:

• Synergistic effect between RGO and Fe3O4 nanoparticles enhances EMI shielding.
• RGO-Fe3O4 nanohybrids are effective for high-performance EMI shielding materials.
• The composite's shielding performance is dependent on RGO-Fe3O4 content and absorption mechanism.