One-step flame synthesis of silver nanoparticles for roll-to-roll production of antibacterial paper

Kofi J. Brobbey, Janne Haapanen, Marianne Gunell, Jyrki M. Mäkelä, Erkki Eerola, Martti Toivakka, Jarkko J. Saarinen

    Research output: Contribution to journalArticleScientificpeer-review

    28 Citations (Scopus)

    Abstract

    Nanoparticles are used in several applications due to the unique properties they possess compared to bulk materials. Production techniques have continuously evolved over the years. Recently, there has been emphasis on environmentally friendly manufacturing processes. Substrate properties often limit the possible production techniques and, for example; until recently, it has been difficult to incorporate nanoparticles into paper. Chemical reduction of a precursor in the presence of paper changes the bulk properties of paper, which may limit intended end-use. In this study, we present a novel technique for incorporating silver nanoparticles into paper surface using a flame pyrolysis procedure known as Liquid Flame Spray. Papers precoated with mineral pigments and plastic are used as substrates. Silver nanoparticles were analyzed using SEM and XPS measurements. Results show a homogeneous monolayer of silver nanoparticles on the surface of paper, which demonstrated antibacterial properties against E. coli. Paper precoated with plastic showed more nanoparticles on the surface compared to pigment coated paper samples except for polyethylene-precoated paper. The results demonstrate a dry synthesis approach for depositing silver nanoparticles directly onto paper surface in a process which produces no effluents. The production technique used herein is up scalable for industrial production of antibacterial paper.

    Original languageEnglish
    Pages (from-to)558-565
    Number of pages8
    JournalApplied Surface Science
    Volume420
    DOIs
    Publication statusPublished - 31 Oct 2017
    Publication typeA1 Journal article-refereed

    Keywords

    • Antibacterial paper
    • Liquid flame spray
    • Roll-to-roll processing
    • Silver nanoparticles

    Publication forum classification

    • Publication forum level 1

    ASJC Scopus subject areas

    • Surfaces, Coatings and Films

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