Prussian Blue Sensor for Bacteria Detection in Personal Protection Clothing

Area of Science:

• Materials Science
• Biotechnology
• Textile Engineering

Background:

• Biological hazards pose significant risks to human life.
• Early detection of biohazards is crucial for effective management and reducing mortality.
• Current detection methods may lack on-site capabilities and require specialized equipment.

Purpose of the Study:

• To evaluate Prussian blue (PB) as a functional compound for creating on-site bacterial sensors on polyester knits.
• To determine optimal PB concentrations for sensor efficacy and material properties.
• To assess the performance of PB-coated knits in detecting various bacteria and resisting chemical penetration.

Main Methods:

• Polyester knits were functionalized with Prussian blue at concentrations of 0.5, 1, and 2 g/L.
• Abrasion resistance was tested using cycles (>2000 cycles).
• Bacterial sensing was evaluated in liquid and solid media for both Gram-positive and Gram-negative bacteria.
• Water repellence and chemical penetration resistance were assessed for 0.5 and 1 g/L concentrations.

Main Results:

• All tested PB concentrations demonstrated high abrasion resistance.
• The functionalized knits successfully detected both Gram-positive and Gram-negative bacteria, indicated by a color change from blue to white.
• Polyester knits with 0.5 and 1 g/L PB exhibited hydrophobic behavior and Level 3 resistance to chemical penetration (acid and base).

Conclusions:

• Prussian blue-coated polyester knits serve as effective on-site sensors for bacterial detection.
• The developed material offers enhanced protective properties, including water and chemical repellence.
• This innovation holds potential for improving safety measures against biological hazards in various applications.