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Preparation of Bioactive Polyamide Fibres Modified with Acetanilide and Copper Sulphate
Dorota Biniaś1, Włodzimierz Biniaś2, Czesław Ślusarczyk2
1Department of Environmental Protection and Engineering, Faculty of Materials, Civil and Environmental Engineering, University of Bielsko-Biala, ul. Willowa 2, 43-309 Bielsko-Biala, Poland.
Materials (Basel, Switzerland)
|October 28, 2023
Summary
This study introduces novel bioactive polyamide 6 fibers incorporating copper ions, demonstrating effective antibacterial properties against both Gram-positive and Gram-negative bacteria. These modified fibers show promise for applications in medicine, textiles, and environmental filtration.
Area of Science:
- Materials Science
- Polymer Chemistry
- Biotechnology
Background:
- Polyamide 6 (PA6) is a versatile polymer with applications in various industries.
- Developing functionalized PA6 fibers with enhanced properties, such as bioactivity, is of significant interest.
- Incorporating metal ions into polymer matrices is a common strategy to impart antimicrobial characteristics.
Purpose of the Study:
- To develop a simple method for creating polyamide 6 fibers modified with acetanilide and copper ions.
- To investigate the antibacterial activity of the modified fibers against selected microorganisms.
- To characterize the structural and morphological changes in the fibers due to the modification.
Main Methods:
- Polyamide 6 fibers were spun with acetanilide and copper sulfate (CuSO4).
- In-situ reduction of CuSO4 to copper (Cu) nanoparticles (CuMPs) occurred during fiber formation.
- Antibacterial activity was tested against Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli.
- Fiber characterization included SEM, OM, FTIR, Raman spectroscopy, WAXS, SAXS, and EDS analysis.
Main Results:
- The modification resulted in a color change from blue to grey-brown, indicating copper ion reduction.
- The resulting fibers exhibited significant antibacterial activity against both Gram-positive and Gram-negative bacteria.
- The largest inhibition zones against Staphylococcus aureus ranged from 1.5 to 4.5 mm, dependent on CuMP concentration.
- SEM, OM, FTIR, Raman, WAXS, SAXS, and EDS confirmed structural and chemical modifications.
Conclusions:
- A straightforward method for producing bioactive polyamide 6 fibers containing copper ions was successfully established.
- The modified fibers demonstrate potent antibacterial properties, particularly against Staphylococcus aureus.
- These novel bioactive fibers hold potential for applications in medicine, textiles, and environmental protection, such as in filter production.
