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  • Detachment of liquid droplets from fibres - Experimental and theoretical evaluation of detachment force due to interfacial tension effects

    Author(s)
    Mullins, Benjamin J
    Pfrang, Andreas
    Braddock, Roger D
    Schimmel, Thomas
    Kasper, Gerhard
    Griffith University Author(s)
    Braddock, Roger D.
    Year published
    2007
    Metadata
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    Abstract
    The detachment of barrel-shaped oil droplets from metal, glass and polymer fibres was examined using an atomic force microscope (AFM). The AFM was used to detach the droplets from the fibres while measuring the force-distance relationship. A novel fibre-droplet interfacial tension model was applied to predict the force required to draw the droplet away from its preferential axisymmetric position on the fibre, and also to predict the maximal force required to detach the droplet. The model assumes that the droplet retains a spherical shape during detachment, i.e., that droplet distortion is negligible. This assumption was found ...
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    The detachment of barrel-shaped oil droplets from metal, glass and polymer fibres was examined using an atomic force microscope (AFM). The AFM was used to detach the droplets from the fibres while measuring the force-distance relationship. A novel fibre-droplet interfacial tension model was applied to predict the force required to draw the droplet away from its preferential axisymmetric position on the fibre, and also to predict the maximal force required to detach the droplet. The model assumes that the droplet retains a spherical shape during detachment, i.e., that droplet distortion is negligible. This assumption was found to be reasonably accurate for small radius oil droplets (<10 孩, however less accurate for larger droplets (>25 孩. However, it was found that the model produced a good agreement with the maximal detachment force measured experimentally-regardless of droplet size and degree of deformation-even though the model could not predict droplet extension beyond a length of one droplet radius.
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    Journal Title
    Journal of Colloid and Interface Science
    Volume
    312
    Publisher URI
    http://www.elsevier.com/wps/find/journaldescription.cws_home/622861/description#description
    DOI
    https://doi.org/10.1016/j.jcis.2007.03.051
    Copyright Statement
    © 2007 Elsevier. Please refer to the journal's website for access to the definitive, published version.
    Subject
    Physical sciences
    Chemical sciences
    Engineering
    History, heritage and archaeology
    Publication URI
    http://hdl.handle.net/10072/18824
    Collection
    • Journal articles

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