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Issue 10, 2017, Issue in Progress
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Highly sticky surfaces made by electrospun polymer nanofibers

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Abstract

We report on a comprehensive study of the unique adhesive properties of mats of polymethylmethacrylate (PMMA) nanofibers produced by electrospinning. Fibers are deposited on glass, with varying of the diameter and the relative orientation of the polymer filaments (random vs. aligned configuration). While no significant variation is observed in the static contact angle (∼130°) of deposited water drops upon changing the average fiber diameter up to the micrometer scale, fibers are found to exhibit unequalled water adhesion. Placed vertically, they can hold up water drops as large as 60 μL, more than twice the values typically obtained with hairy surfaces prepared by different methods. For aligned fibers with anisotropic wetting behavior, the maximum volume measured in the direction perpendicular to the fibers goes up to 90 μL. This work suggests new routes to tailor the wetting behavior on extended areas by nanofiber coatings, with possible applications in adsorbing and catalytic surfaces, microfluidic devices, and filtration technologies.

Graphical abstract: Highly sticky surfaces made by electrospun polymer nanofibers

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Publication details

The article was received on 08 Oct 2016, accepted on 31 Oct 2016 and first published on 17 Jan 2017


Article type: Paper
DOI: 10.1039/C6RA24922A
Citation: RSC Adv., 2017,7, 5836-5842
  • Open access: Creative Commons BY license
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    Highly sticky surfaces made by electrospun polymer nanofibers

    S. Varagnolo, F. Raccanello, M. Pierno, G. Mistura, M. Moffa, L. Persano and D. Pisignano, RSC Adv., 2017, 7, 5836
    DOI: 10.1039/C6RA24922A

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