News Column

Reports from University Erlangen-Nurnberg Highlight Recent Findings in Interface Science

February 25, 2014



By a News Reporter-Staff News Editor at Journal of Technology -- Investigators publish new report on Interface Science. According to news reporting out of Erlangen, Germany, by VerticalNews editors, research stated, "The dynamic wetting behaviour and the mobility of droplets on fibres is a very important factor in coating processes, textile fabrication, in self-cleaning processes and in the filtration of fluids. In principal, filter regeneration depends on the mobility of the droplets on the fibre surface."

Our news journalists obtained a quote from the research from University Erlangen-Nurnberg, "Mobile droplets tend to coalesce which greatly simplifies their removal from the filter. In this contribution mobility analyses of water droplets on monofilaments in air are performed. Studies of droplet evaporation on pure PET fibres and on nanorough fibres coated with SiO2 nanoparticles of diameters between 6 nm and 50 nm in a hydrophilic binder system were done. We show that the mobility of water droplets correlates with the droplet conformation which in turn is determined by the droplet-fibre interface. We demonstrate that fibre coatings can be used to tailor the conformation and mobility of water droplets. The smaller the nanoparticle diameters in the coating are, the smaller are the contact angles between water droplets and fibre and the better is the mobility of the droplets on the fibre."

According to the news editors, the research concluded: "Our results allow a fast optimization of the fibre surface properties which are directly influencing the contact angle, the mobility and the coalescence of water droplets and thus filter regeneration."

For more information on this research see: Correlation between shape, evaporation mode and mobility of small water droplets on nanorough fibres. Journal of Colloid and Interface Science, 2014;417():171-179. Journal of Colloid and Interface Science can be contacted at: Academic Press Inc Elsevier Science, 525 B St, Ste 1900, San Diego, CA 92101-4495, USA. (Elsevier - www.elsevier.com; Journal of Colloid and Interface Science - www.elsevier.com/wps/product/cws_home/622861)

Our news journalists report that additional information may be obtained by contacting C.S. Funk, University of Erlangen Nurnberg, Inst Particle Technol LFG, D-91058 Erlangen, Germany. Additional authors for this research include B. Winzer and W. Peukert.

Keywords for this news article include: Europe, Germany, Erlangen, Interface Science

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Source: Journal of Technology


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