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. 2022 Sep 10;14(18):3794.
doi: 10.3390/polym14183794.

In Situ Coating of Polydopamine-AgNPs on Polyester Fabrics Producing Antibacterial and Antioxidant Properties

Esam S Allehyani  1 , Yaaser Q Almulaiky  2   3 , Sami A Al-Harbi  1 , Reda M El-Shishtawy  4   5
Affiliations

In Situ Coating of Polydopamine-AgNPs on Polyester Fabrics Producing Antibacterial and Antioxidant Properties

Esam S Allehyani et al. Polymers (Basel). .

Abstract

Nanoparticles are increasingly utilized as coating materials to improve the properties of polyester textiles. In this work, polyester textiles were successfully fabricated, with hydrazide groups serving as ligands for the entrapment of sliver ions and subsequent reduction to AgNPs. Polydopamine (PDA) was used in this work to impart antibacterial and antioxidant properties to the polyester textiles through its phenolic hydroxyl groups, which can convert silver ions into AgNPs. Moreover, glucose was used as a reducing agent to create AgNPs-loaded polyester hydrazide. ATR-FTIR, SEM, EDX, thermogravimetric analysis (TGA), and tensile strength were used to characterize the pristine polyester, the polyester hydrazide, the PDA-coated AgNP-loaded polyester hydrazide and the AgNP-loaded polyester hydrazide. A broth test was also used to investigate the textile's antimicrobial activities against Escherichia coli and Staphylococcus aureus. Overall, the composite nanocoating with PDA-AgNPs demonstrated good tensile strength and antioxidant and antibacterial characteristics, implying the practicality of PDA-AgNPs coating polyester for biomedical textile applications.

Keywords: antimicrobial activity; antioxidant activity; hydrazide; polydopamine; polyester; silver nanoparticle.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Schematic representation for the synthesis of PDA-coated, AgNPs-loaded polyester hydrazide and AgNPs-loaded polyester hydrazide.
Figure 2
Figure 2
Images of (1) PET, (2) PET hydrazide, (3) PET hydrazide-AgNP-PDA, and (4) PET hydrazide-AgNP.
Figure 3
Figure 3
ATR-FTIR spectra of PET, PET hydrazide, PET hydrazide-AgNP, and PET hydrazide-AgNP-PDA.
Figure 4
Figure 4
Low and high magnification FESEM images of (a) PET, (b) PET hydrazide, (c) PET hydrazide-AgNP-PDA, and (d) PET hydrazide-AgNP, with (e) the SEM–energy-dispersive X-ray (EDX) spectra of PET hydrazide-AgNP-PDA.
Figure 5
Figure 5
Low and high magnification thermograms of PET, PET hydrazide, PET hydrazide-AgNP, and PET hydrazide-AgNP-PDA.
Figure 6
Figure 6
Effect of elongation and tensile strength on (1) PET, ( 2) PET hydrazide, (3) PET hydrazide-AgNP-PDA, and (4) PET hydrazide-AgNP.
Figure 7
Figure 7
The DPPH antioxidant efficiency at different times for (1) PET, (2) PET hydrazide, (3) PET hydrazide-AgNP-PDA, and (4) PET hydrazide-AgNP.
Figure 8
Figure 8
The FRAP reducing power of (1) PET, ( 2) PET hydrazide, (3) PET hydrazide-AgNP-PDA, and (4) PET hydrazide-AgNP.
Figure 9
Figure 9
Effect of the (1) PET, (2) PET hydrazide, (3) PET hydrazide-AgNP-PDA, and (4) PET hydrazide-AgNP on the microbial growth of E. coli and Staphylococcus aureus, after incubating for 24 h at 37 °C.
See this image and copyright information in PMC

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