Structural Colored Fabric Based on Monodisperse Cu₂O Microspheres

Area of Science:

• Materials Science
• Nanotechnology
• Optics

Background:

• Structural-colored fabrics offer eco-friendly, dyeless alternatives with anti-fading properties.
• High refractive index materials like metal, metal oxide, and semiconductor microspheres are key for photonic crystals and structural colors.

Purpose of the Study:

• To synthesize tunable copper(I) oxide (Cu2O) microspheres for structural coloration.
• To investigate the influence of microsphere size and concentration on fabric color.
• To assess the durability of the resulting structural colors.

Main Methods:

• Two-step reduction method at room temperature to synthesize Cu2O microspheres.
• Controlled microsphere size (275 nm to 190 nm) by adjusting the citrate to Cu2+ molar ratio.
• Preparation of monodisperse Cu2O microsphere dispersions and evaluation of structural color with poly(butyl acrylate).

Main Results:

• Achieved tunable structural colors in fabrics by precisely controlling Cu2O microsphere size.
• Demonstrated improved color fastness against friction and bending using poly(butyl acrylate) as an adhesive.
• Established a method for creating vibrant, durable, and eco-friendly colored fabrics.

Conclusions:

• Cu2O microspheres are effective for creating tunable structural colors in textiles.
• Poly(butyl acrylate) significantly enhances the stability and durability of these structural colors.
• This approach offers a promising, environmentally friendly alternative to traditional dyeing methods.