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  11. High Modulus Epoxy/go-pani Self-healing Materials Without Catalyst By Molecular Engineering And Nanocomposite Fabrication

High Modulus Epoxy/GO-PANI Self-Healing Materials Without Catalyst by Molecular Engineering and Nanocomposite Fabrication

Geonwoo Kim1, Cigdem Caglayan1, Gun Jin Yun1,2

  • 1Department of Aerospace Engineering, Seoul National University, Seoul 08826, Republic of Korea.

Polymers
|November 27, 2024

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View abstract on PubMed

Summary
This summary is machine-generated.

This study introduces graphene oxide-polyaniline (GO-PANI) filler to enhance self-healing materials. The new material, SV-GPN1, shows improved modulus and healing efficiency, demonstrating potential for industrial applications.

Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Self-healing materials extend product lifespan in electronics, robotics, aerospace, and automotive industries.
  • A key challenge is balancing mechanical properties with effective self-healing capabilities.
  • Graphene oxide (GO) offers high modulus, while polyaniline (PANI) provides self-healing via hydrogen bonds.

Purpose of the Study:

  • To develop a novel self-healing material overcoming the mechanical properties-healing performance trade-off.
  • To investigate the synergistic effects of graphene oxide-polyaniline (GO-PANI) filler in a vitrimer epoxy matrix.
  • To evaluate the mechanical properties, self-healing efficiency, and reproducibility of the developed material.

Main Methods:

  • Incorporation of graphene oxide-polyaniline (GO-PANI) filler into an epoxy vitrimer matrix.
Keywords:
GO-PANIepoxynanocompositeself-healing materials

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  • Characterization of mechanical properties, including modulus.
  • Assessment of self-healing efficiency through experimental testing.
  • Evaluation of material reproducibility using thick samples.

    • Main Results:

    • The developed material, SV-GPN1 (Self-healing Vitrimer-GO-PANI1), achieved a modulus of 770 MPa.
    • A self-healing efficiency of 65.0% was demonstrated, with enhancements observed upon GO-PANI addition.
    • Optimal GO-PANI concentration improved healing; excessive amounts hindered molecular interaction and healing.
    • Excellent reproducibility was confirmed, with a 16.50 mm thick sample exhibiting self-healing capabilities.

    Conclusions:

    • The GO-PANI filler effectively enhances both the modulus and self-healing efficiency of the vitrimer material.
    • SV-GPN1 demonstrates significant potential for application in demanding industrial sectors like aerospace due to its robust properties.
    • The study highlights the importance of optimizing filler concentration for superior self-healing performance and material integrity.