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Hybrid Silica Xerogel and Titania/Silica Xerogel Dispersions Reinforcing Hydrophilicity and Antimicrobial Resistance of Leathers

Four leather substrates from different animals were treated by dispersions containing hydrophilic composite silica-hyperbranched poly(ethylene imine) xerogels. Antimicrobial activity was introduced by incorporating silver nanoparticles and/or benzalkonium chloride. The gel precursor solutions were a...

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Autores principales: Arkas, Michael, Bompotis, Theofanis, Giannakopoulos, Konstantinos, Favvas, Evangelos P., Arvanitopoulou, Marina, Arvanitopoulos, Konstantinos, Arvanitopoulos, Labros, Kythreoti, Georgia, Vardavoulias, Michail, Giannakoudakis, Dimitrios A., Castellsagués, Laura, Soto González, Sara Maria
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10530134/
https://www.ncbi.nlm.nih.gov/pubmed/37754366
http://dx.doi.org/10.3390/gels9090685
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author Arkas, Michael
Bompotis, Theofanis
Giannakopoulos, Konstantinos
Favvas, Evangelos P.
Arvanitopoulou, Marina
Arvanitopoulos, Konstantinos
Arvanitopoulos, Labros
Kythreoti, Georgia
Vardavoulias, Michail
Giannakoudakis, Dimitrios A.
Castellsagués, Laura
Soto González, Sara Maria
author_facet Arkas, Michael
Bompotis, Theofanis
Giannakopoulos, Konstantinos
Favvas, Evangelos P.
Arvanitopoulou, Marina
Arvanitopoulos, Konstantinos
Arvanitopoulos, Labros
Kythreoti, Georgia
Vardavoulias, Michail
Giannakoudakis, Dimitrios A.
Castellsagués, Laura
Soto González, Sara Maria
author_sort Arkas, Michael
collection PubMed
description Four leather substrates from different animals were treated by dispersions containing hydrophilic composite silica-hyperbranched poly(ethylene imine) xerogels. Antimicrobial activity was introduced by incorporating silver nanoparticles and/or benzalkonium chloride. The gel precursor solutions were also infused before gelation to titanium oxide powders typically employed for induction of self-cleaning properties. The dispersions from these biomimetically premade xerogels integrate environmentally friendly materials with short coating times. Scanning electron microscopy (SEM) provided information on the powder distribution onto the leathers. Substrate and coating composition were estimated by infrared spectroscopy (IR) and energy-dispersive X-ray spectroscopy (EDS). Surface hydrophilicity and water permeability were assessed by water-contact angle experiments. The diffusion of the leather’s initial components and xerogel additives into the water were measured by Ultraviolet-Visible (UV-Vis) spectroscopy. Protection against GRAM- bacteria was tested for Escherichia coli, Pseudomonas aeruginosa, and Klebsiella pneumoniae against GRAM+ bacteria for Staphylococcus aureus and Enterococcus faecalis and against fungi for Candida albicans. Antibiofilm capacity experiments were performed against Staphylococcus aureus, Klebsiella pneumoniae, Enterococcus faecalis, and Candida albicans. The application of xerogel dispersions proved an adequate and economically feasible alternative to the direct gel formation into the substrate’s pores for the preparation of leathers intended for medical uses.
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spelling pubmed-105301342023-09-28 Hybrid Silica Xerogel and Titania/Silica Xerogel Dispersions Reinforcing Hydrophilicity and Antimicrobial Resistance of Leathers Arkas, Michael Bompotis, Theofanis Giannakopoulos, Konstantinos Favvas, Evangelos P. Arvanitopoulou, Marina Arvanitopoulos, Konstantinos Arvanitopoulos, Labros Kythreoti, Georgia Vardavoulias, Michail Giannakoudakis, Dimitrios A. Castellsagués, Laura Soto González, Sara Maria Gels Article Four leather substrates from different animals were treated by dispersions containing hydrophilic composite silica-hyperbranched poly(ethylene imine) xerogels. Antimicrobial activity was introduced by incorporating silver nanoparticles and/or benzalkonium chloride. The gel precursor solutions were also infused before gelation to titanium oxide powders typically employed for induction of self-cleaning properties. The dispersions from these biomimetically premade xerogels integrate environmentally friendly materials with short coating times. Scanning electron microscopy (SEM) provided information on the powder distribution onto the leathers. Substrate and coating composition were estimated by infrared spectroscopy (IR) and energy-dispersive X-ray spectroscopy (EDS). Surface hydrophilicity and water permeability were assessed by water-contact angle experiments. The diffusion of the leather’s initial components and xerogel additives into the water were measured by Ultraviolet-Visible (UV-Vis) spectroscopy. Protection against GRAM- bacteria was tested for Escherichia coli, Pseudomonas aeruginosa, and Klebsiella pneumoniae against GRAM+ bacteria for Staphylococcus aureus and Enterococcus faecalis and against fungi for Candida albicans. Antibiofilm capacity experiments were performed against Staphylococcus aureus, Klebsiella pneumoniae, Enterococcus faecalis, and Candida albicans. The application of xerogel dispersions proved an adequate and economically feasible alternative to the direct gel formation into the substrate’s pores for the preparation of leathers intended for medical uses. MDPI 2023-08-25 /pmc/articles/PMC10530134/ /pubmed/37754366 http://dx.doi.org/10.3390/gels9090685 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Arkas, Michael
Bompotis, Theofanis
Giannakopoulos, Konstantinos
Favvas, Evangelos P.
Arvanitopoulou, Marina
Arvanitopoulos, Konstantinos
Arvanitopoulos, Labros
Kythreoti, Georgia
Vardavoulias, Michail
Giannakoudakis, Dimitrios A.
Castellsagués, Laura
Soto González, Sara Maria
Hybrid Silica Xerogel and Titania/Silica Xerogel Dispersions Reinforcing Hydrophilicity and Antimicrobial Resistance of Leathers
title Hybrid Silica Xerogel and Titania/Silica Xerogel Dispersions Reinforcing Hydrophilicity and Antimicrobial Resistance of Leathers
title_full Hybrid Silica Xerogel and Titania/Silica Xerogel Dispersions Reinforcing Hydrophilicity and Antimicrobial Resistance of Leathers
title_fullStr Hybrid Silica Xerogel and Titania/Silica Xerogel Dispersions Reinforcing Hydrophilicity and Antimicrobial Resistance of Leathers
title_full_unstemmed Hybrid Silica Xerogel and Titania/Silica Xerogel Dispersions Reinforcing Hydrophilicity and Antimicrobial Resistance of Leathers
title_short Hybrid Silica Xerogel and Titania/Silica Xerogel Dispersions Reinforcing Hydrophilicity and Antimicrobial Resistance of Leathers
title_sort hybrid silica xerogel and titania/silica xerogel dispersions reinforcing hydrophilicity and antimicrobial resistance of leathers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10530134/
https://www.ncbi.nlm.nih.gov/pubmed/37754366
http://dx.doi.org/10.3390/gels9090685
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