ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The nano-size silver particles were prepared in polymer-protecting colloidal dispersion withsilver nitride as the raw material, hydrazine hydrate as the reduction reagent and polyvinyl pirrolidone(PVP) as the protective solvent. The optimal conditions for the preparation process were studiedexperimentally as well. The influences from main factors, such as Ag+ concentration and ratio ofhydrazine/AgNO3, on the particle size, appearance shape, particle aggregation condition and sizedistribution of nano-silver particles were also investigated. The results showed that the size of Agparticles prepared in this polymer-protecting system is less than 50 nm, and PVP can reduce the growingtendency of nano-size silver particles. Meanwhile, the antibacterial dope loaded nano-silver particleswere prepared by wetting agent, dispersant, defoamer, etc. The antibacterial and bacteriostatic effects ofthe dope with or without nano-silver particles were tested with bacilli as the tested bacteria. Theexperiment results showed that the dope loaded nano-silver particles are of high practicality. Its antibacterialratio is also up to 91.9% in one hour when the added dosage of nano-silver is 0.02%
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.2115.pdf
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