SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (12): 1419-1424.DOI: 10.1016/S1004-9541(13)60636-9

• 材料与产品工程 • 上一篇    下一篇

Antibacterial Properties of Novel Bacterial Cellulose Nanofiber Containing Silver Nanoparticles

杨加志1, 刘晓丽2, 黄立勇3, 孙东平1   

  1. 1 Key Laboratory for Soft Chemistry and Functional Materials of Ministry Education, Nanjing University of Science and Technology, Nanjing 210094, China;
    2 State Key Laboratory of Bioelectronics, School of Biological and Medical Engineering, Southeast University, Nanjing 210096, China;
    3 Taixing Yulang Chemical Co., Ltd.
  • 收稿日期:2013-05-16 修回日期:2013-10-11 出版日期:2013-12-28 发布日期:2013-12-27
  • 通讯作者: SUN Dongping
  • 基金资助:

    Supported by the National Natural Science Foundation of China (21206076), the Natural Science Foundation of Jiangsu Province (BK2012401 and BK2011715) and National High Technology Research and Development Program of China (2011AA050701).

Antibacterial Properties of Novel Bacterial Cellulose Nanofiber Containing Silver Nanoparticles

YANG Jiazhi1, LIU Xiaoli2, HUANG Liyong3, SUN Dongping1   

  1. 1 Key Laboratory for Soft Chemistry and Functional Materials of Ministry Education, Nanjing University of Science and Technology, Nanjing 210094, China;
    2 State Key Laboratory of Bioelectronics, School of Biological and Medical Engineering, Southeast University, Nanjing 210096, China;
    3 Taixing Yulang Chemical Co., Ltd.
  • Received:2013-05-16 Revised:2013-10-11 Online:2013-12-28 Published:2013-12-27
  • Contact: SUN Dongping
  • Supported by:

    Supported by the National Natural Science Foundation of China (21206076), the Natural Science Foundation of Jiangsu Province (BK2012401 and BK2011715) and National High Technology Research and Development Program of China (2011AA050701).

摘要: In this work, we describe a novel facile method to prepare long one-dimensional hybrid nanofibers by using hydrated bacterial cellulose nanofibers (BCF) as a template. Silver (Ag) nanoparticles with an average diameter of 1.5 nm were well dispersed on BCF via a simple in situ chemical-reduction between AgNO3 and NaBH4 at a relatively low temperature. A growth mechanism is proposed that Ag nanoparticles are uniformly anchored onto BCF by coordination with BC-containing hydroxyl groups. The bare BCF and as-prepared Ag/BCF hybrid nanofibers were characterized by several techniques including transmission electron microscopy, X-ray diffraction, thermogravimetric analyses, and ultraviolet-visible (UV-Vis) absorption spectra. The antibacterial properties of Ag/BCF hybrid nanofibers against Escherichia coli (E. coli, Gram-negative) and Staphylococcu saureus (S. saureus, Gram-positive) bacteria were evaluated by using modified Kirby Bauer method and colony forming count method. The results show that Ag nanoparticles are well dispersed on BCF surface via in situ chemical-reduction. The Ag/BCF hybrid nanofiber presents strong antibacterial property and thus offers its candidature for use as functional antimicrobial agents.

关键词: bacterial cellulose, nanofiber, antimicrobial agents, silver

Abstract: In this work, we describe a novel facile method to prepare long one-dimensional hybrid nanofibers by using hydrated bacterial cellulose nanofibers (BCF) as a template. Silver (Ag) nanoparticles with an average diameter of 1.5 nm were well dispersed on BCF via a simple in situ chemical-reduction between AgNO3 and NaBH4 at a relatively low temperature. A growth mechanism is proposed that Ag nanoparticles are uniformly anchored onto BCF by coordination with BC-containing hydroxyl groups. The bare BCF and as-prepared Ag/BCF hybrid nanofibers were characterized by several techniques including transmission electron microscopy, X-ray diffraction, thermogravimetric analyses, and ultraviolet-visible (UV-Vis) absorption spectra. The antibacterial properties of Ag/BCF hybrid nanofibers against Escherichia coli (E. coli, Gram-negative) and Staphylococcu saureus (S. saureus, Gram-positive) bacteria were evaluated by using modified Kirby Bauer method and colony forming count method. The results show that Ag nanoparticles are well dispersed on BCF surface via in situ chemical-reduction. The Ag/BCF hybrid nanofiber presents strong antibacterial property and thus offers its candidature for use as functional antimicrobial agents.

Key words: bacterial cellulose, nanofiber, antimicrobial agents, silver