Engineered Cu-PEN Composites at the Nanoscale: Preparation and Characterisation

Area of Science:

• Materials Science
• Nanotechnology
• Polymer Science

Background:

• Polymeric materials have expanding applications, necessitating advanced preparation methods and property characterization.
• Designing functional surfaces on polymers is crucial for developing new materials with tailored properties.

Purpose of the Study:

• To engineer the surface of polyethylene naphthalate (PEN) by introducing copper nanowires.
• To investigate the morphology, composition, optical, and surface properties of the resulting Cu/PEN nanocomposite.

Main Methods:

• Surface nanostructuring of PEN using KrF excimer laser treatment to create ripple patterns.
• Deposition of copper (Cu) onto the nanostructured PEN surface via vacuum evaporation to form nanowires.
• Characterization using atomic force microscopy (AFM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), UV-Vis spectroscopy, and sessile drop method.

Main Results:

• Successfully fabricated Cu nanowires on laser-textured PEN surfaces.
• Characterized the morphology and confirmed Cu distribution, observing gradual oxidation.
• Measured optical properties and confirmed the hydrophobic nature of the Cu/PEN surface.

Conclusions:

• Laser surface texturing combined with vacuum evaporation is an effective method for preparing Cu/polymer nanocomposites.
• The resulting Cu/PEN nanocomposite exhibits properties suitable for potential bioapplications.
• Post-deposition oxidation of Cu nanowires presents opportunities for further development in biological applications.