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Antibacterial Textile Based on Hydrolyzed Milk Casein.

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Summary

New antimicrobial textiles blend polypropylene with hydrolyzed casein from milk, offering effective antibacterial properties. This sustainable approach utilizes a biobased material, addressing environmental concerns associated with traditional antimicrobial agents.

Keywords:
antibacterial textilesfilamentshydrolyzed caseinmelt spinningpolypropylenesynthetic fibers

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Area of Science:

  • Materials Science
  • Biotechnology
  • Textile Engineering

Background:

  • Conventional antimicrobial agents in textiles raise environmental and health concerns.
  • There is a growing need for sustainable and biobased alternatives in the textile industry.
  • Valorizing dairy byproducts like casein presents an opportunity for innovative material development.

Purpose of the Study:

  • To develop novel antimicrobial textile structures using polypropylene (PP) and hydrolyzed casein.
  • To evaluate the antibacterial efficacy of the developed materials against Gram-positive and Gram-negative bacteria.
  • To assess the impact of hydrolyzed casein addition on the mechanical and physical properties of PP textiles.

Main Methods:

  • Hydrolysis of bovine milk casein in aqueous media.
  • Blending hydrolyzed casein (5 wt.%) into a polypropylene (PP) matrix via melt extrusion.
  • Processing the PP-casein blend into multifilaments using melt spinning.
  • Producing knitted textile structures from the multifilaments.
  • Testing antibacterial activity and evaluating mechanical properties (tensile strength, tenacity) and moisture retention.

Main Results:

  • The developed textile structures exhibited significant antibacterial activity against both Gram (+) and Gram (-) bacterial strains.
  • The addition of 5 wt.% hydrolyzed casein had a minimal impact on the mechanical properties of PP in dumbbell form.
  • A slight decrease in filament tenacity was observed, along with no significant moisture retention but a minor alteration in rheological behavior.

Conclusions:

  • Hydrolyzed casein is an effective biobased antimicrobial agent for polypropylene textiles.
  • This approach offers a sustainable alternative to nonrenewable antimicrobial agents, addressing environmental and health concerns.
  • The process utilizes melt techniques and presents a viable method for recycling dairy byproducts into functional textiles.