Electrically Conductive, Transparent Polymeric Nanocomposites Modified by 2D Ti₃C₂T_x (MXene)

Area of Science:

• Materials Science
• Nanotechnology
• Polymer Science

Background:

• Development of advanced materials for flexible electronics is crucial.
• Two-dimensional (2D) materials like MXene offer unique properties.
• Copolyamide (coPA) matrices provide a versatile platform for nanocomposites.

Purpose of the Study:

• To prepare and characterize self-standing thin nanocomposite films of coPA and MXene.
• To investigate the electrical, mechanical, and optical properties of these nanocomposites.
• To assess their potential for flexible electronic applications.

Main Methods:

• Preparation of nanocomposite films via casting.
• Characterization of electrical conductivity using standard methods.
• Evaluation of optical properties (transparency) using UV spectroscopy.
• Assessment of mechanical properties using dynamic mechanical analysis.

Main Results:

• Achieved a low percolation threshold of 0.05 vol.% for MXene in coPA.
• Obtained a maximum electrical conductivity of 1.4 × 10⁻² S·cm⁻¹ at 5 wt.% MXene.
• Maintained over 75% transparency even with 5 wt.% MXene.
• Demonstrated improved mechanical properties and excellent flexibility.

Conclusions:

• The coPA:MXene nanocomposites exhibit a promising balance of electrical conductivity, transparency, and mechanical flexibility.
• Low filler content is sufficient to achieve desirable properties.
• These materials are suitable for applications in flexible electronics.