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Durable antibacterial Ag/polyacrylonitrile (Ag/PAN) hybrid nanofibers prepared by atmospheric plasma treatment and electrospinning

Permanent URL:
http://handle.nal.usda.gov/10113/49957
Abstract:
Durable antibacterial Ag/polyacrylonitrile (Ag/PAN) hybrid nanofibers were prepared by atmospheric plasma treatment and electrospinning. Atmospheric helium plasma treatment was first used to reduce the AgNO3 precursor in pre-electrospinning solutions into metallic silver nanoparticles, followed by electrospinning into continuous and smooth nanofibers with Ag nanoparticles embedded in the matrix. SEM, TEM, and EDX spectra were used to study the structure and surface elemental composition of the nanofibers. Silver nanoparticles, with diameters ranging between 3 and 6 nm, were found to be uniformly dispersed in the nanofiber matrix. The Ag/PAN nanofibers exhibited slow and long-lasting silver ion release, which provided robust antibacterial activity against both Gram-positive Bacillus cereus and Gram-negative Escherichia coli microorganisms.
Author(s):
Shi, Quan , Vitchuli, Narendiran , Nowak, Joshua , Caldwell, Jane M. , Breidt, Frederick , Bourham, Mohamed , Zhang, Xiangwu , McCord, Marian
Subject(s):
antibacterial properties , nanotechnology , scanning electron microscopy , silver , Gram-positive bacteria , Bacillus cereus , Gram-negative bacteria , Escherichia coli , nanofibers , polyacrylonitrile , nanoparticles
Format:
p. 1402-1409.
Note:
Includes references
Source:
European polymer journal 2011 July, v. 47, no. 7
Language:
English
Year:
2011
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
File:
Download [PDF File]
Rights:
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.