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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

AFM image topography of one of the samples. AFM topography of one of the samples (40 × 40 μm).
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Figure 1: AFM image topography of one of the samples. AFM topography of one of the samples (40 × 40 μm).

Mentions: Firstly the morphology of the thin films was studied by AFM. The resultant coating was uniform and homogeneous, showing a slightly porous surface with an average roughness of 28.3 nm (rms) (Figure 1). It has been reported in Ref. [37] that the basic pH of the TEOS precursor solution gives macroporous aggregates that can be assembled into a film with the dip-coating technique. This matrix shows the advantages of the inorganic materials such as mechanical strength and chemical stability, and at the same time its porosity allows the ion interchange with the external medium, a fundamental aspect when an efficient silver-based antibacterial coating is desired.


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)

AFM image topography of one of the samples. AFM topography of one of the samples (40 × 40 μm).
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 1: AFM image topography of one of the samples. AFM topography of one of the samples (40 × 40 μm).
Mentions: Firstly the morphology of the thin films was studied by AFM. The resultant coating was uniform and homogeneous, showing a slightly porous surface with an average roughness of 28.3 nm (rms) (Figure 1). It has been reported in Ref. [37] that the basic pH of the TEOS precursor solution gives macroporous aggregates that can be assembled into a film with the dip-coating technique. This matrix shows the advantages of the inorganic materials such as mechanical strength and chemical stability, and at the same time its porosity allows the ion interchange with the external medium, a fundamental aspect when an efficient silver-based antibacterial coating is desired.

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