Effect of corrosion rate and surface energy of silver coatings on bacterial adhesion

Wei Shao, Q. Zhao

    Research output: Contribution to journalArticle

    23 Citations (Scopus)

    Abstract

    Many studies suggest a strong antimicrobial activity of silver coatings. The biocidal activity of silver is related to the biologically active silver ion released from silver coatings. However, no Studies have been reported on the effect of surface energy of silver coatings on antibacterial performance. In this paper, three silver coatings with various corrosion rates and Surface energies were prepared on stainless steel plates using AgNO3 based electroless plating solutions. The corrosion rate and Surface energy of the silver coatings were characterized with CorrTest Electrochemistry Workstation and Dataphysics OCA-20 contact angle analyzer, respectively. The antibacterial performance of the silver coatings was evaluated with Pseudomonas aeruginosa PA01, which frequently causes medical device-associated infections. The experimental results showed that surface energy had significant influence on initial bacterial adhesion at low corrosion rate. The extended DLVO theory was used to explain the bacterial adhesion behavior. (C) 2009 Elsevier B.V. All rights reserved.

    Original languageEnglish
    Pages (from-to)98-103
    Number of pages6
    JournalColloids and Surfaces B: Biointerfaces
    Volume76
    Issue number1
    DOIs
    Publication statusPublished - 1 Mar 2010

    Keywords

    • Electroless plating
    • Silver
    • Bacterial adhesion
    • Surface energy
    • Corrosion rate
    • DLVO theory
    • DEVICES

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