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Related Experiment Video

Updated: Sep 30, 2025

Formulation of Zinc-Based Nanomaterials using the Eucommia ulmoides Bark Extract and their Wound Healing Potential
06:54

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Published on: December 27, 2024

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Bio-Based Eucommia ulmoides Gum Composites with High Electromagnetic Interference Shielding Performance.

Hailan Kang1,2, Sen Luo1,2, Hongyang Du1,2

  • 1College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.

Polymers
|March 10, 2022
PubMed
Summary

High-performance electromagnetic interference (EMI) shielding composites were developed using Eucommia ulmoides gum (EUG) with carbon nanotube/graphene nanoplatelet hybrids. These bio-based materials offer excellent EMI shielding effectiveness for commercial applications.

Keywords:
Eucommia ulmoides gumcarbon nanotubeselectromagnetic shieldinggraphene

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Composite Materials

Background:

  • Electromagnetic interference (EMI) poses challenges in electronic devices.
  • Developing effective and eco-friendly EMI shielding materials is crucial.
  • Bio-based polymers offer sustainable alternatives for composite matrices.

Purpose of the Study:

  • To create high-performance EMI shielding bio-based composites.
  • To investigate the synergistic effects of carbon nanotube (CNT) and graphene nanoplatelet (GNP) hybrids in a bio-based matrix.
  • To evaluate the EMI shielding effectiveness, conductivity, and mechanical properties of the developed composites.

Main Methods:

  • Preparation of composites using Eucommia ulmoides gum (EUG) as the matrix.
  • Incorporation of carbon nanotube (CNT)/graphene nanoplatelet (GNP) hybrids as conductive fillers.
  • Characterization of composite morphology, conductivity, EMI shielding effectiveness, and mechanical properties.

Main Results:

  • Uniform distribution of CNTs and GNPs within the EUG matrix, forming an effective conductive network.
  • Achieved EMI shielding effectiveness of 42 dB in the X-band frequency range.
  • Demonstrated improved conductivity and mechanical properties compared to pure EUG.
  • Identified conduction losses, multiple reflections, and interfacial dipole relaxation as primary shielding mechanisms.

Conclusions:

  • The developed CNT/GNP/EUG composites exhibit excellent EMI shielding performance meeting commercial requirements.
  • The bio-based nature and superior properties make these composites promising for various EMI shielding applications.
  • Synergistic integration of CNTs and GNPs enhances the overall performance of the bio-composite.