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Open AccessArticle

Multifunctional Chitosan/Gold Nanoparticles Coatings for Biomedical Textiles

1
Department of Mechanical Engineering, Federal University of Rio Grande do Norte, Natal 59064-741, Brazil
2
Department of Textile Engineering, Federal University of Rio Grande do Norte, Natal 59064-741, Brazil
3
Department of Textile Engineering, Federal University of Santa Catarina (UFSC), Campus Blumenau, Blumenau 89036-002, Brazil
4
Centre for Textile Science and Technology, Department of Textile Engineering, University of Minho, 4800-058 Guimarães, Portugal
*
Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(8), 1064; https://doi.org/10.3390/nano9081064
Received: 1 July 2019 / Revised: 17 July 2019 / Accepted: 21 July 2019 / Published: 24 July 2019
(This article belongs to the Special Issue Bionanotechnology)
Gold nanoparticles (AuNPs), chemically synthesized by citrate reduction, were for the first time immobilized onto chitosan-treated soybean knitted fabric via exhaustion method. AuNPs were successfully produced in the form of highly spherical, moderated polydisperse, stable structures. Their average size was estimated at ≈35 nm. Successful immobilization of chitosan and AuNPs were confirmed by alterations in the fabric’s spectrophotometric reflectance spectrum and by detection of nitrogen and gold, non-conjugated C=O stretching vibrations of carbonyl functional groups and residual N-acetyl groups characteristic bands by X-ray photoelectron spectroscopy (XPS) and Fourier-Transform Infrared Spectroscopy (FTIR) analysis. XPS analysis confirms the strong binding of AuNPs on the chitosan matrix. The fabrics’ thermal stability increased with the introduction of both chitosan and AuNPs. Coated fabrics revealed an ultraviolet protection factor (UPF) of +50, which established their effectiveness in ultraviolet (UV) radiation shielding. They were also found to resist up to 5 washing cycles with low loss of immobilized AuNPs. Compared with AuNPs or chitosan alone, the combined functionalized coating on soy fabrics demonstrated an improved antimicrobial effect by reducing Staphylococcus aureus adhesion (99.94%) and Escherichia coli (96.26%). Overall, the engineered fabrics were confirmed as multifunctional, displaying attractive optical properties, UV-light protection and important antimicrobial features, that increase their interest for potential biomedical applications. View Full-Text
Keywords: multifunctional textiles; biodegradable soybean fibres; chitosan; gold nanoparticles; UV-light protection; antimicrobial multifunctional textiles; biodegradable soybean fibres; chitosan; gold nanoparticles; UV-light protection; antimicrobial
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MDPI and ACS Style

Silva, I.O.; Ladchumananandasivam, R.; Nascimento, J.H.O.; Silva, K.K.O.S.; Oliveira, F.R.; Souto, A.P.; Felgueiras, H.P.; Zille, A. Multifunctional Chitosan/Gold Nanoparticles Coatings for Biomedical Textiles. Nanomaterials 2019, 9, 1064. https://doi.org/10.3390/nano9081064

AMA Style

Silva IO, Ladchumananandasivam R, Nascimento JHO, Silva KKOS, Oliveira FR, Souto AP, Felgueiras HP, Zille A. Multifunctional Chitosan/Gold Nanoparticles Coatings for Biomedical Textiles. Nanomaterials. 2019; 9(8):1064. https://doi.org/10.3390/nano9081064

Chicago/Turabian Style

Silva, Iris O.; Ladchumananandasivam, Rasiah; Nascimento, José H.O.; Silva, Késia K.O.S.; Oliveira, Fernando R.; Souto, António P.; Felgueiras, Helena P.; Zille, Andrea. 2019. "Multifunctional Chitosan/Gold Nanoparticles Coatings for Biomedical Textiles" Nanomaterials 9, no. 8: 1064. https://doi.org/10.3390/nano9081064

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