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  11. High-performance Aramids With Intrinsic Bactericide Activity

High-Performance Aramids with Intrinsic Bactericide Activity

Sandra de la Parra1, Álvaro Miguel2,3, Natalia Fernández-Pampín1

  • 1International Research Center in Critical Raw Materials for Advanced Industrial Technologies (ICCRAM), R&D Center, Universidad de Burgos, Plaza de Misael Bañuelos s/n, 09001 Burgos, Spain.

ACS Applied Materials & Interfaces
|February 7, 2024

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View abstract on PubMed

Summary
This summary is machine-generated.

Researchers developed a simple method to create aramid-coated textiles with built-in antibacterial properties using vanillin. These enhanced materials maintain high performance, improve mechanical strength, and offer robust bacterial resistance for demanding applications.

Area of Science:

  • Materials Science
  • Textile Engineering
  • Antimicrobial Technologies

Background:

  • High-performance aramid fibers are crucial in protective gear and industrial applications.
  • Bacterial proliferation on textiles is a significant issue, especially when frequent washing is not feasible.
  • Existing aramid materials lack inherent antimicrobial properties, limiting their use in certain environments.

Purpose of the Study:

  • To develop a scalable method for imparting bactericidal activity to aramid-coated textiles and films.
  • To evaluate the impact of vanillin functionalization on the mechanical and thermal properties of aramids.
  • To assess the antibacterial efficacy, reusability, and biocompatibility of the novel bactericidal aramid materials.

Main Methods:

  • Aramid-coated textiles and films were prepared by reacting parent aramids with vanillin.
Keywords:
advanced functionalitiesaramidsbactericidehigh-performance polymers

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  • Mechanical properties were evaluated using tensile tests to determine Young's modulus.
  • Thermal performance was assessed, and antibacterial activity was quantified using A parameters against Staphylococcus aureus and Klebsiella pneumoniae. Skin irritation tests were conducted using reconstructed human epidermis.

    • Main Results:

    • Vanillin functionalization preserved high-performance characteristics and enhanced mechanical properties, increasing Young's modulus by up to 50% compared to commercial m-aramid.
    • The bactericidal aramid materials demonstrated significant antibacterial activity with A parameters of 4.31 for S. aureus and 3.44 for K. pneumoniae.
    • The coated textiles maintained their performance over at least 5 washing cycles and were found to be non-irritating to the skin.

    Conclusions:

    • A straightforward and scalable method for creating intrinsically bactericidal aramid materials has been established.
    • These functionalized aramids offer a combination of high performance, improved mechanical strength, and robust antibacterial properties.
    • The metal-free, non-irritating bactericidal aramids are suitable for applications requiring both durability and antimicrobial function, such as first responder textiles and filters.
    textile