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Related Concept Videos

Polymers02:34

Polymers

The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...
Polymers02:34

Polymers

The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...
Polymers02:34

Polymers

The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...

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Updated: Jul 13, 2026

Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles
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Recyclable Polymer Composites with a Wrinkled Core-Shell Structure for Highly Efficient EMI Shielding and Low

Jing Chen1,2, Yang Zhang2, Haorong Li3

  • 1School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China.

ACS Applied Materials & Interfaces
|May 2, 2024
PubMed
Summary

This study presents a novel composite material for electromagnetic interference (EMI) shielding. The material demonstrates high shielding effectiveness and recyclability, offering a promising solution for advanced EMI shielding applications.

Keywords:
Carbon nanotubesElectromagnetic interference shielding (EMI)Joule heatingPhotothermalPolymer-matrix composites (PMCs)

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Electromagnetics

Background:

  • Developing green electromagnetic interference (EMI) shielding materials with high effectiveness, low reflection, and recyclability is challenging.
  • Existing materials often struggle to balance these critical properties.

Purpose of the Study:

  • To create a novel, recyclable composite material for effective EMI shielding.
  • To investigate the impact of microstructures and humidity on shielding performance.

Main Methods:

  • A polyacrylamide (PAM) composite with chemically cross-linked PAM@carbon nanotube (cPAM@CNT) core-shell particles was synthesized using an adsorption-drying-shrinking strategy.
  • The composite featured wrinkled microstructures for electromagnetic wave attenuation.
  • The effect of humidity on shielding properties was evaluated.

Main Results:

  • The composite achieved an average EMI shielding effectiveness (SE) of 67.5 dB in the X band due to its wrinkled microstructures.
  • Exposure to 91% relative humidity increased the average EMI SE to 83.2 dB, with low reflection (2.7 dB).
  • The material exhibited excellent Joule heating, photothermal performance, and recyclability.

Conclusions:

  • The developed PAM composite offers a high-performance, green, and recyclable solution for EMI shielding.
  • The material's unique microstructures and hygroscopic nature contribute to its superior shielding effectiveness.
  • This work shows significant promise for advanced EMI shielding applications.