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Updated: Jan 24, 2026

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

Published on: September 19, 2020

Reversible Self-Healing Carbon-Based Nanocomposites for Structural Applications.

Liberata Guadagno¹, Luigi Vertuccio², Carlo Naddeo³

¹Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy. lguadagno@unisa.it.com.

|May 22, 2019

Summary

This study integrates functionalized multiwalled carbon nanotubes (MWCNTs) into epoxy matrices to create self-healing nanocomposites. These materials exhibit promising electrical conductivity and mechanical properties for advanced structural applications.

Keywords:

carbon–carbon composites (CCCs)mechanical properties smart materials supramolecular interactions thermosetting resins

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Area of Science:

Materials Science
Polymer Chemistry
Nanotechnology

Background:

Reversible Hydrogen Bonds (RHB) are key to developing self-healing materials.
Multifunctional nanocomposites require robust matrices and effective reinforcing agents.

Purpose of the Study:

To covalently attach hydrogen bonding moieties to MWCNTs.
To develop self-healing epoxy nanocomposites with enhanced mechanical and electrical properties.

Main Methods:

Functionalization of MWCNTs with hydrogen bonding groups.
Toughening of epoxy matrices with rubber phases.
Incorporation of functionalized MWCNTs into optimized epoxy matrices.
Characterization of self-healing performance, electrical conductivity, curing degree, glass transition temperature, and storage modulus.

Main Results:

Functionalized MWCNTs were successfully integrated into toughened epoxy matrices.
Self-healing nanocomposites containing 2.0% functionalized MWCNTs showed electrical conductivity between 6.76 × 10⁻³ S/m and 3.77 × 10⁻² S/m.
The nanocomposites demonstrated suitable curing degrees, glass transition temperatures, and storage moduli.

Conclusions:

The developed multifunctional nanocomposites exhibit significant self-healing capabilities.
The incorporation of functionalized MWCNTs enhances both mechanical integrity and electrical conductivity.
These materials show potential for use as functional structural components in demanding applications.