Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/61006
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Campo DC | Valor | Idioma |
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dc.contributor.author | Silva, Iris O. | por |
dc.contributor.author | Ladchumananandasivam, Rasiah | por |
dc.contributor.author | Nascimento, José Heriberto O. | por |
dc.contributor.author | Silva, Késia Karina O. S. | por |
dc.contributor.author | Oliveira, Fernando R. | por |
dc.contributor.author | Souto, A. Pedro | por |
dc.contributor.author | Felgueiras, Helena Prado | por |
dc.contributor.author | Zille, Andrea | por |
dc.date.accessioned | 2019-07-25T08:41:31Z | - |
dc.date.available | 2019-07-25T08:41:31Z | - |
dc.date.issued | 2019 | - |
dc.identifier.uri | https://hdl.handle.net/1822/61006 | - |
dc.description.abstract | 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. | por |
dc.description.sponsorship | : This research was funded by FEDER funds through the Operational Competitiveness Program – COMPETE and by National Funds through Fundação para a Ciência e Tecnologia (FCT) under the project POCI‐ 01‐0145‐FEDER‐007136 and UID/CTM/00264/2019. A. Zille also acknowledges financial support of the FCT through an Investigator FCT Research contract (IF/00071/2015) and the project PTDC/CTM‐TEX/28295/2017 financed by FCT, FEDER and POCI. This work was funded by FEDER funds through the Operational Competitiveness Program – COMPETE and by National Funds through Fundação para a Ciência e Tecnologia (FCT)—under the project POCI‐01‐0145‐FEDER‐007136 and UID/CTM/00264/2019. A. Zille also acknowledges financial support of the FCT through an Investigator FCT Research contract (IF/00071/2015) and the project PTDC/CTM‐ TEX/28295/2017 financed by FCT, FEDER and POCI. | por |
dc.language.iso | eng | por |
dc.publisher | MDPI | por |
dc.rights | openAccess | por |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | por |
dc.subject | Multifunctional textiles | por |
dc.subject | Biodegradable soybean fibres | por |
dc.subject | Chitosan | por |
dc.subject | Gold nanoparticles | por |
dc.subject | UV‐light protection | por |
dc.subject | Antimicrobial | por |
dc.title | Multifunctional chitosan/gold nanoparticles coatings for biomedical textiles | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
oaire.citationStartPage | 1064 | por |
oaire.citationIssue | 8 | por |
oaire.citationVolume | 9 | por |
dc.identifier.doi | 10.3390/nano9081064 | por |
dc.subject.fos | Engenharia e Tecnologia::Engenharia dos Materiais | por |
dc.subject.fos | Engenharia e Tecnologia::Nanotecnologia | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Nanomaterials | por |
Aparece nas coleções: | DET/2C2T - Artigos em revistas internacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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nanomaterials-09-01064.pdf | Paper | 1,94 MB | Adobe PDF | Ver/Abrir |
nanomaterials-09-01064-s001.pdf | Supplementary Material | 1,7 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons