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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 absorption spectra of the coating film with different PAA concentration.
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Figure 4: UV-VIS absorption. UV-VIS absorption spectra of the coating film with different PAA concentration.

Mentions: When the samples are immersed into several consecutive loading/reduction cycles the size and amount of the nanoparticles is increased [35]. Figure 2 shows the direct relation between the number of load/reduction cycles and the increasing of the SPR absorption band around 410 nm, proportional to the amount of Ag nanoparticles trapped into the thin film. Moreover, if the concentration of the polymeric solution is varied, the silver synthesis conditions are modified. Figure 4 shows the growth of the intensity of the SPR absorption band as the number of loading/reduction cycles is increased, for two samples with different PAA molar ratio.


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 absorption spectra of the coating film with different PAA concentration.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 4: UV-VIS absorption. UV-VIS absorption spectra of the coating film with different PAA concentration.
Mentions: When the samples are immersed into several consecutive loading/reduction cycles the size and amount of the nanoparticles is increased [35]. Figure 2 shows the direct relation between the number of load/reduction cycles and the increasing of the SPR absorption band around 410 nm, proportional to the amount of Ag nanoparticles trapped into the thin film. Moreover, if the concentration of the polymeric solution is varied, the silver synthesis conditions are modified. Figure 4 shows the growth of the intensity of the SPR absorption band as the number of loading/reduction cycles is increased, for two samples with different PAA molar ratio.

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