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Investigators from Amirkabir University of Technology Have Reported New Data on Nanoparticles (Preparation and characterization of...

July 22, 2014



Investigators from Amirkabir University of Technology Have Reported New Data on Nanoparticles (Preparation and characterization of polyethersulfone/silver nanocomposite ultrafiltration membrane for antibacterial applications)

By a News Reporter-Staff News Editor at Life Science Weekly -- Research findings on Nanoparticles are discussed in a new report. According to news originating from Tehran, Iran, by NewsRx correspondents, research stated, "Antimicrobial ultrafiltration membranes were prepared by coating silver nanoparticles on the surface of polyethersulfone (PES) membranes which were fabricated via phase inversion induced by the immersion precipitation technique, and their morphology and performance were compared with the antimicrobial PES membranes synthesized by adding the silver nanoparticles into the casting solution during the phase inversion process. For this purpose, stable and uniform colloidal solutions of the silver nanoparticles were prepared by chemical reduction of silver salt using fructose and dimethylformamide as a reducing agent."

Our news journalists obtained a quote from the research from the Amirkabir University of Technology, "The silver nanoparticles were characterized by ultraviolet-visible spectroscopy, X-ray powder diffraction and dynamic light scattering analysis. The morphology and surface properties of the prepared membranes were examined by field emission scanning electron microscopy and atomic force microscopy analysis. Moreover, the separation properties, antimicrobial efficiency and amount of silver release from the PES nanocomposite membranes during the cross flow ultrafiltration were determined. The results indicated that the silver content of the coated PES membranes was greater than the membranes fabricated by the solution blending method. Also, the permeation flux of the silver-coated membranes was similar to the neat PES membranes, while the membranes prepared by the second approach had less flux. The membranes synthesized by both coating and blending methods showed high antimicrobial and bactericidal activity against gram-negative bacteria such as Escherichia coli and gram-positive bacteria such as Staphylococcus aureus."

According to the news editors, the research concluded: "Finally, the prepared antimicrobial membranes were successfully used for the ultrafiltration of raw milk to reduce the microbial load during the concentration process."

For more information on this research see: Preparation and characterization of polyethersulfone/silver nanocomposite ultrafiltration membrane for antibacterial applications. Polymers for Advanced Technologies, 2014;25(7):711-722. Polymers for Advanced Technologies can be contacted at: Wiley-Blackwell, 111 River St, Hoboken 07030-5774, NJ, USA. (Wiley-Blackwell - www.wiley.com/; Polymers for Advanced Technologies - onlinelibrary.wiley.com/journal/10.1002/(ISSN)1099-1581)

The news correspondents report that additional information may be obtained from M. Toroghi, Amirkabir Univ Technol, Tehran Polytechnic, Food Proc Engn & Biotechnol Res Center, Tehran, Iran. Additional authors for this research include A. Raisi and A. Aroujalian (see also Nanoparticles).

Keywords for this news article include: Iran, Asia, Tehran, Nanotechnology, Emerging Technologies

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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