Journal of Nanoparticle Research

, Volume 11, Issue 3, pp 553–560 | Cite as

Efficient fabrication of transparent antimicrobial poly(vinyl alcohol) thin films

Research Paper

Abstract

We have explored in situ synthesis of Ag nanoparticles in transparent PVA films in view of increasing areas of application of those films. The two-step procedure consists of ion incorporation in the matrix and subsequent thermal reduction. Smooth and transparent PVA films containing Ag nanoparticles of 5–20 nm were fabricated by this approach. The optical property of the films and the size of metal nanoparticles could be controlled by changing the reaction conditions. By increasing heating temperature, the absorbance and wavelength of surface plasmon resonance (SPR) of the composite film increased, and nanoparticles with larger particle sizes and broader size distributions were obtained. In the temperature range of 130–170 °C, the wavelength of SPR increased with increasing the AgNO3 concentration. At 190 °C, however, the wavelenght of SPR blue-shifted initially when the AgNO3 concentration increased from 10 to 80 mmol/L, and red-shifted thereafter. The composite films showed excellent antimicrobial performance toward bacteria such as Escherchia coli. Such hybrids afford very effective and environment-friendly antimicrobial surface coatings.

Keywords

Poly(vinyl alcohol) film In-situ synthesis Ag nanoparticles Thermal reduction Coatings 

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Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  • Shuxia Liu
    • 1
  • Junhui He
    • 1
  • Jianfeng Xue
    • 2
  • Wenjun Ding
    • 2
  1. 1.Functional Nanomaterials Laboratory and Key Laboratory of Organic Optoelectronic Functional Materials and Molecular Engineering, Technical Institute of Physics and ChemistryChinese Academy of SciencesHaidianqu, BeijingPeople’s Republic of China
  2. 2.Biological DepartmentGraduate University of Chinese Academy of SciencesShijingshanqu, BeijingPeople’s Republic of China

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