Aqueous Synthesis of Silver Nanoparticle Embedded Cationic Polymer Nanofibers and Their Antibacterial Activity

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• 作者：Jooyoung Song ; Haeyoung Kang ; Choonghyeon Lee ; Sun Hye Hwang ; Jyongsik Jang
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2012
• 出版时间：January 25, 2012
• 年：2012
• 卷：4
• 期：1
• 页码：460-465
• 全文大小：402K
• 年卷期：v.4,no.1(January 25, 2012)
• ISSN：1944-8252

文摘

This paper describes the one-pot, aqueous synthesis of cationic polymer nanofibers with embedded silver nanoparticles. Poly[2-(tert-butylaminoethyl) methacrylate] (PTBAM) was used as a cationic polymer substrate to reinforce the antimicrobial activity of the embedded silver nanoparticles. Electron microscope analyses revealed that the as-synthesized nanofibers had diameters of approximately 40 nm and lengths up to about 10 渭m. Additionally, silver nanoparticles of approximately 8 nm in diameter were finely embedded into the prepared nanofibers. The embedded silver nanoparticles had a lower tendency to agglomerate than colloidal silver nanoparticles of comparable size. In addition, the nanofibers with embedded silver nanoparticles exhibited excellent antibacterial performance against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus. Interestingly, the prepared nanofibers exhibited enhanced bactericidal performance compared with the silver-embedded poly(methyl methacrylate) (PMMA) nanofibers, presumably because of the antibacterial properties of the PTBAM substrate.

Keywords:

silver; nanoparticles; cationic polymer; nanofiber; antibacterial; nanocomposite