Rubber elastomeric nanocomposites with antimicrobial properties

Area of Science:

• Materials Science
• Polymer Science
• Biotechnology

Background:

• Elastomeric materials are widely used but often lack inherent antimicrobial properties.
• Developing advanced nanocomposites with enhanced functionalities is crucial for various industries.

Purpose of the Study:

• To develop an elastomeric nanocomposite with significant antibacterial and antifungal activity.
• To investigate the impact of modified bentonite clay nanofillers on the mechanical and thermal properties of elastomers.
• To demonstrate an economically viable method for producing high-value antimicrobial elastomeric materials.

Main Methods:

• Incorporation of modified bentonite clay (Nanobent® ZR2) into a rubber blend matrix using an innovative technology.
• Evaluation of mechanical properties, including elongation and tensile stress at break.
• Assessment of thermal behavior and temperature usage range.
• Verification of antimicrobial effects against various bacteria and yeast strains.

Main Results:

• Addition of 1-3% functionalized bentonite nanoparticles significantly enhanced elongation and tensile stress at break, while maintaining stiffness.
• Improved thermal properties and an extended temperature usage range (from -29 to 311°C) were observed.
• The nanocomposite demonstrated significant antibacterial and antifungal activity against tested reference strains.

Conclusions:

• The developed elastomeric nanocomposite exhibits potent antimicrobial properties and improved material characteristics.
• The innovative nanofiller incorporation method is economically viable for producing high-added-value materials.
• These antimicrobial elastomers are promising for applications in medicine, biomedical engineering, and the food industry.