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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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Gels |
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| Online Access: | https://www.mdpi.com/2310-2861/9/9/685 |
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| author | Michael Arkas Theofanis Bompotis Konstantinos Giannakopoulos Evangelos P. Favvas Marina Arvanitopoulou Konstantinos Arvanitopoulos Labros Arvanitopoulos Georgia Kythreoti Michail Vardavoulias Dimitrios A. Giannakoudakis Laura Castellsagués Sara Maria Soto González |
| author_facet | Michael Arkas Theofanis Bompotis Konstantinos Giannakopoulos Evangelos P. Favvas Marina Arvanitopoulou Konstantinos Arvanitopoulos Labros Arvanitopoulos Georgia Kythreoti Michail Vardavoulias Dimitrios A. Giannakoudakis Laura Castellsagués Sara Maria Soto González |
| author_sort | Michael Arkas |
| collection | DOAJ |
| 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 <i>Escherichia coli</i>, <i>Pseudomonas aeruginosa</i>, and <i>Klebsiella pneumoniae</i> against GRAM+ bacteria for <i>Staphylococcus aureus</i> and <i>Enterococcus faecalis</i> and against fungi for <i>Candida albicans</i>. Antibiofilm capacity experiments were performed against <i>Staphylococcus aureus</i>, <i>Klebsiella pneumoniae</i>, <i>Enterococcus faecalis</i>, and <i>Candida albicans</i>. 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. |
| first_indexed | 2024-03-10T22:44:45Z |
| format | Article |
| id | doaj.art-cde488469d1e4a4e832121f363060ef4 |
| institution | Directory Open Access Journal |
| issn | 2310-2861 |
| language | English |
| last_indexed | 2024-03-10T22:44:45Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Gels |
| spelling | doaj.art-cde488469d1e4a4e832121f363060ef42023-11-19T10:50:23ZengMDPI AGGels2310-28612023-08-019968510.3390/gels9090685Hybrid Silica Xerogel and Titania/Silica Xerogel Dispersions Reinforcing Hydrophilicity and Antimicrobial Resistance of LeathersMichael Arkas0Theofanis Bompotis1Konstantinos Giannakopoulos2Evangelos P. Favvas3Marina Arvanitopoulou4Konstantinos Arvanitopoulos5Labros Arvanitopoulos6Georgia Kythreoti7Michail Vardavoulias8Dimitrios A. Giannakoudakis9Laura Castellsagués10Sara Maria Soto González11Institute of Nanoscience Nanotechnology, NCSR “Demokritos”, Patriarchou Gregoriou Street, 15310 Athens, GreeceInstitute of Nanoscience Nanotechnology, NCSR “Demokritos”, Patriarchou Gregoriou Street, 15310 Athens, GreeceInstitute of Nanoscience Nanotechnology, NCSR “Demokritos”, Patriarchou Gregoriou Street, 15310 Athens, GreeceInstitute of Nanoscience Nanotechnology, NCSR “Demokritos”, Patriarchou Gregoriou Street, 15310 Athens, GreeceInstitute of Nanoscience Nanotechnology, NCSR “Demokritos”, Patriarchou Gregoriou Street, 15310 Athens, GreeceDARVICHEM Alexandrou, Papagou 5, 18233 Agios Ioannis Rentis, GreeceDARVICHEM Alexandrou, Papagou 5, 18233 Agios Ioannis Rentis, GreeceInstitute of Bioscience and Applications, NCSR “Demokritos”, Patriarchou Gregoriou Street, 15310 Athens, GreecePYROGENESIS S.A., Technological Park 1, Athinon Avenue, 19500 Attica, GreeceDepartment Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceBarcelona Institute for Global Health (ISGlobal), Universitat de Barcelona, 08036 Barcelona, SpainBarcelona Institute for Global Health (ISGlobal), Universitat de Barcelona, 08036 Barcelona, SpainFour 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 <i>Escherichia coli</i>, <i>Pseudomonas aeruginosa</i>, and <i>Klebsiella pneumoniae</i> against GRAM+ bacteria for <i>Staphylococcus aureus</i> and <i>Enterococcus faecalis</i> and against fungi for <i>Candida albicans</i>. Antibiofilm capacity experiments were performed against <i>Staphylococcus aureus</i>, <i>Klebsiella pneumoniae</i>, <i>Enterococcus faecalis</i>, and <i>Candida albicans</i>. 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.https://www.mdpi.com/2310-2861/9/9/685titanium oxideantibacterialantifungalantibiofilmhyperbrancheddendrimers |
| spellingShingle | Michael Arkas Theofanis Bompotis Konstantinos Giannakopoulos Evangelos P. Favvas Marina Arvanitopoulou Konstantinos Arvanitopoulos Labros Arvanitopoulos Georgia Kythreoti Michail Vardavoulias Dimitrios A. Giannakoudakis Laura Castellsagués Sara Maria Soto González Hybrid Silica Xerogel and Titania/Silica Xerogel Dispersions Reinforcing Hydrophilicity and Antimicrobial Resistance of Leathers Gels titanium oxide antibacterial antifungal antibiofilm hyperbranched dendrimers |
| 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 | titanium oxide antibacterial antifungal antibiofilm hyperbranched dendrimers |
| url | https://www.mdpi.com/2310-2861/9/9/685 |
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