Durable antibacterial Ag/polyacrylonitrile (Ag/PAN) hybrid nanofibers prepared by atmospheric plasma treatment and electrospinning |
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| Authors: | Quan Shi Narendiran Vitchuli Joshua Nowak Jane M Caldwell Frederick Breidt Mohamed Bourham Xiangwu Zhang Marian McCord |
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| Institution: | aFiber and Polymer Science Program, Department of Textile Engineering, Chemistry and Science, North Carolina State University, Raleigh, NC 27695-8301, USA;bDepartment of Nuclear Engineering, North Carolina State University, Raleigh, NC 27695-7909, USA;cUS Department of Agriculture, Agricultural Research Service, North Carolina State University, Raleigh, NC 27695-7624, USA;dDepartment of Food Science, North Carolina Agricultural Research Service, North Carolina State University, Raleigh, NC 27695-7624, USA;eJoint Department of Biomedical Engineering, North Carolina State University, Raleigh, NC 27695-7115, USA;fUniversity of North Carolina, Chapel Hill, NC 27599, USA |
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| 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. |
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| Keywords: | Atmospheric plasma Electrospinning Nanofibers Ag nanoparticles Antibacterial activity |
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