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An antibacterial coating based on a polymer/sol-gel hybrid matrix loaded with silver nanoparticles.

Rivero PJ, Urrutia A, Goicoechea J, Zamarreño CR, Arregui FJ, Matías IR - Nanoscale Res Lett (2011)

Bottom Line: Energy dispersive X-ray (EDX) was also used to confirm the presence of the resulting silver nanoparticles within the thin films.Finally the coatings have been tested in bacterial cultures of genus Lactobacillus plantarum to observe their antibacterial properties.It has been experimentally demonstrated that these silver loaded organic-inorganic hybrid films have a very good antimicrobial behavior against this type of bacteria.

View Article: PubMed Central - HTML - PubMed

Affiliation: Nanostructured Optical Devices Laboratory, Electric and Electronic Engineering Department, Public University of Navarra, Edif, Los Tejos, Campus Arrosadía, 31006, Pamplona, Spain. pedrojose.rivero@unavarra.es.

ABSTRACT
In this work a novel antibacterial surface composed of an organic-inorganic hybrid matrix of tetraorthosilicate and a polyelectrolyte is presented. A precursor solution of tetraethoxysilane (TEOS) and poly(acrylic acid sodium salt) (PAA) was prepared and subsequently thin films were fabricated by the dip-coating technique using glass slides as substrates. This hybrid matrix coating is further loaded with silver nanoparticles using an in situ synthesis route. The morphology and composition of the coatings have been studied using UV-VIS spectroscopy and atomic force microscopy (AFM). Energy dispersive X-ray (EDX) was also used to confirm the presence of the resulting silver nanoparticles within the thin films. Finally the coatings have been tested in bacterial cultures of genus Lactobacillus plantarum to observe their antibacterial properties. It has been experimentally demonstrated that these silver loaded organic-inorganic hybrid films have a very good antimicrobial behavior against this type of bacteria.

No MeSH data available.


Related in: MedlinePlus

UV-VIS absorption. UV-VIS absorbance spectra before and after 450°C thermal treatment.
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Figure 5: UV-VIS absorption. UV-VIS absorbance spectra before and after 450°C thermal treatment.

Mentions: Moreover, the samples were thermally treated at 450°C for 2 h to increase their mechanical stability. The resulting coatings showed a sharp improvement of the mechanical strength, and a further AFM analysis showed that there was no significant alteration in the morphology of the films. Nevertheless, the UV-VIS absorption spectra of the samples were dramatically modified. After the thermal treatment the SPR absorption peak was significantly narrowed and increased in intensity, as it is shown in Figure 5. This is consistent with the evidences found by other authors in other works [41].


An antibacterial coating based on a polymer/sol-gel hybrid matrix loaded with silver nanoparticles.

Rivero PJ, Urrutia A, Goicoechea J, Zamarreño CR, Arregui FJ, Matías IR - Nanoscale Res Lett (2011)

UV-VIS absorption. UV-VIS absorbance spectra before and after 450°C thermal treatment.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211391&req=5

Figure 5: UV-VIS absorption. UV-VIS absorbance spectra before and after 450°C thermal treatment.
Mentions: Moreover, the samples were thermally treated at 450°C for 2 h to increase their mechanical stability. The resulting coatings showed a sharp improvement of the mechanical strength, and a further AFM analysis showed that there was no significant alteration in the morphology of the films. Nevertheless, the UV-VIS absorption spectra of the samples were dramatically modified. After the thermal treatment the SPR absorption peak was significantly narrowed and increased in intensity, as it is shown in Figure 5. This is consistent with the evidences found by other authors in other works [41].

Bottom Line: Energy dispersive X-ray (EDX) was also used to confirm the presence of the resulting silver nanoparticles within the thin films.Finally the coatings have been tested in bacterial cultures of genus Lactobacillus plantarum to observe their antibacterial properties.It has been experimentally demonstrated that these silver loaded organic-inorganic hybrid films have a very good antimicrobial behavior against this type of bacteria.

View Article: PubMed Central - HTML - PubMed

Affiliation: Nanostructured Optical Devices Laboratory, Electric and Electronic Engineering Department, Public University of Navarra, Edif, Los Tejos, Campus Arrosadía, 31006, Pamplona, Spain. pedrojose.rivero@unavarra.es.

ABSTRACT
In this work a novel antibacterial surface composed of an organic-inorganic hybrid matrix of tetraorthosilicate and a polyelectrolyte is presented. A precursor solution of tetraethoxysilane (TEOS) and poly(acrylic acid sodium salt) (PAA) was prepared and subsequently thin films were fabricated by the dip-coating technique using glass slides as substrates. This hybrid matrix coating is further loaded with silver nanoparticles using an in situ synthesis route. The morphology and composition of the coatings have been studied using UV-VIS spectroscopy and atomic force microscopy (AFM). Energy dispersive X-ray (EDX) was also used to confirm the presence of the resulting silver nanoparticles within the thin films. Finally the coatings have been tested in bacterial cultures of genus Lactobacillus plantarum to observe their antibacterial properties. It has been experimentally demonstrated that these silver loaded organic-inorganic hybrid films have a very good antimicrobial behavior against this type of bacteria.

No MeSH data available.


Related in: MedlinePlus