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A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles
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Robustly Superhydrophobic Conductive Textile for Efficient Electromagnetic Interference Shielding.

Li-Chuan Jia, Guoqiang Zhang1, Ling Xu

  • 1Department of Macromolecular Science and Engineering , Case Western Reserve University , Cleveland , Ohio 44106-7202 , United States.

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|December 7, 2018
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Summary

This study developed a durable superhydrophobic electromagnetic interference shielding textile (EMIST) using silver nanowire networks and a special coating. The robust EMIST maintains its protective properties even after extreme mechanical and chemical challenges.

Keywords:
EMI shieldingchemical durabilityconductive textilemechanical robustnesssuperhydrophobic

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Textile Engineering

Background:

  • Superhydrophobic electromagnetic interference shielding textiles (EMIST) are crucial for outdoor equipment.
  • Achieving long-term durability and stability in harsh conditions remains a significant challenge.

Purpose of the Study:

  • To design and implement a highly robust superhydrophobic EMIST.
  • To evaluate the durability and stability of the EMIST under various mechanical and chemical stresses.

Main Methods:

  • Fabrication of EMIST using silver nanowire (AgNW) networks and a superhydrophobic coating on commercial textiles.
  • Characterization of superhydrophobicity (water contact angle, sliding angle) and EMI shielding effectiveness.
  • Assessment of durability through stretching-releasing cycles, ultrasonic treatment, peeling tests, and exposure to acidic/alkaline solutions and organic solvents.

Main Results:

  • The developed EMIST exhibits a high water contact angle (160.8°) and low sliding angle (2.9°).
  • Superior EMI shielding effectiveness of 51.5 dB was achieved.
  • The EMIST maintained superhydrophobicity and significant EMI shielding (42.6 dB) after 5000 stretching-releasing cycles.
  • Exceptional resistance to ultrasonic treatment, peeling, harsh chemicals, and solvents was demonstrated.

Conclusions:

  • The robust superhydrophobic EMIST offers a promising solution for protecting equipment in extreme environments.
  • The synergistic effect of AgNWs, carbon nanotubes, PTFE nanoparticles, and fluoroacrylic polymer contributes to its outstanding performance.
  • This work paves the way for developing advanced EMISTs capable of long-term functionality in wet and corrosive conditions.