Smart Antibacterial Fabric Response to Sweat: Constructing Reversibly Switchable Surface by Zwitterionic Block...

Area of Science:

• Materials Science
• Biotechnology
• Textile Engineering

Background:

• Existing antibacterial fabrics lack smart stimulus-response capabilities, especially under high humidity.
• Development of advanced textiles for health monitoring, sports, and medical applications is ongoing.

Purpose of the Study:

• To design and characterize a smart, sweat-responsive antibacterial fabric.
• To achieve dual antibacterial mechanisms ('active attack' and 'passive defense') under varying humidity conditions.

Main Methods:

• Grafting zwitterionic PTMSPMA-co-PTMAO copolymer onto cotton fabric (CF).
• Evaluating antibacterial efficacy against Escherichia coli and Staphylococcus aureus.
• Assessing antiadhesion properties in sweat environments.
• Characterizing smart responses to humidity and ionic conditions.

Main Results:

• The modified fabric (PTMSPMA-co-PTMAO-CF) demonstrated over 99.97% bacterial killing rates.
• Achieved over 99.95% antiadhesion rates in sweat, indicating significant efficacy in high humidity.
• Exhibited reversible 'active attack' (killing) and 'passive defense' (antiadhesion) based on environmental stimuli.

Conclusions:

• PTMSPMA-co-PTMAO-CF offers a novel solution for smart antibacterial textiles adaptable to high-humidity environments.
• The fabric's dual defense mechanism provides versatile protection against bacterial contamination.
• Potential applications include advanced sportswear, medical protective gear, and health monitoring textiles.