Prolonging the Duration of Preventing Bacterial Adhesion of Nanosilver-Containing Polymer Films through Hydrophobicity

A superhydrophobic coating composed of silver nanoparticles was developed on copper from fluorinated multilayered polyelectrolyte films to examine its performance in preventing microbial adhesion. Antibacterial and antibiofouling experiments for this novel coating were conducted with SRB. From the d...

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Bibliographic Details
Published in:Langmuir 2012-12, Vol.28 (49), p.17019-17025
Main Authors: Yin, Bing, Liu, Tao, Yin, Yansheng
Format: Article
Language:English
Subjects:
Anti-Infective Agents, Local - chemical synthesis
Anti-Infective Agents, Local - pharmacology
Bacteria
Bacterial Adhesion - drug effects
Chemistry
Colloidal state and disperse state
Copper
Disk Diffusion Antimicrobial Tests
Electrolytes - chemistry
Exact sciences and technology
General and physical chemistry
Halogenation
Metal Nanoparticles - chemistry
Microbial Viability - drug effects
Photoelectron Spectroscopy
Physical and chemical studies. Granulometry. Electrokinetic phenomena
Polymers - chemical synthesis
Polymers - pharmacology
Silver - chemistry
Silver - pharmacology
Sulfur-Reducing Bacteria - drug effects
Sulfur-Reducing Bacteria - growth & development
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Summary:A superhydrophobic coating composed of silver nanoparticles was developed on copper from fluorinated multilayered polyelectrolyte films to examine its performance in preventing microbial adhesion. Antibacterial and antibiofouling experiments for this novel coating were conducted with SRB. From the disk diffusion tests (for 48 h), it was found that, compared to the traditional coating composed of nanosilver, this novel coating significantly improved antibacterial performance and long-term effectiveness. The oxidation states of the immobilized silver in polyelectrolyte multilayer films were investigated with X-ray photoelectron spectroscopy (XPS), and the stability of the immobilized silver was evaluated through a leaching test. It was found that if silver was exposed to aqueous environments some ionic silver species would be produced and released. The ion release kinetics showed that the duration of sustained release of antibacterial Ag ions from the novel coatings was prolonged, which was why they had more long-term antibacterial performance.
ISSN:0743-7463
1520-5827
DOI:10.1021/la303264k