3
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      Surface Chemistry Enhancements for the Tunable Super-Liquid Repellency of Low-Surface-Tension Liquids

      rapid-communication

      Read this article at

      ScienceOpenPublisherPMC
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Super-hydrophobic, super-oleo(amphi)phobic, and super-omniphobic materials are universally important in the fields of science and engineering. Despite rapid advancements, gaps of understanding still exist between each distinctive wetting state. The transition of super-hydrophobicity to super-(oleo-, amphi-, and omni-)phobicity typically requires the use of re-entrant features. Today, re-entrant geometry induced super-(amphi- and omni-)phobicity is well-supported by both experiments and theory. However, owing to geometrical complexities, the concept of re-entrant geometry forms a dogma that limits the industrial progress of these unique states of wettability. Moreover, a key fundamental question remains unanswered: are extreme surface chemistry enhancements able to influence super-liquid repellency? Here, this was rigorously tested via an alternative pathway that does not require explicit designer re-entrant features. Highly controllable and tunable vertical network polymerization and functionalization were used to achieve fluoroalkyl densification on nanoparticles. For the first time, relative fluoro-functionalization densities are quantitatively tuned and correlated to super-liquid repellency performance. Step-wise tunable super-amphiphobic nanoparticle films with a Cassie–Baxter state (contact angle of >150° and sliding angle of <10°) against various liquids is demonstrated. This was tested down to very low surface tension liquids to a minimum of ca. 23.8 mN/m. Such findings could eventually lead to the future development of super-(amphi)omniphobic materials that transcend the sole use of re-entrant geometry.

          Related collections

          Author and article information

          Journal
          Nano Lett
          Nano Lett
          nl
          nalefd
          Nano Letters
          American Chemical Society
          1530-6984
          1530-6992
          06 February 2019
          13 March 2019
          : 19
          : 3
          : 1892-1901
          Affiliations
          [1]Nanotechnology Research Laboratory, Research School of Engineering, The Australian National University , Canberra ACT 2601, Australia
          [2]Max Planck Institute for Polymer Research , Ackermannweg 10, D-55128 Mainz, Germany
          Author notes
          Article
          10.1021/acs.nanolett.8b04972
          6728126
          30726096
          6f8f900a-2151-44f5-9a32-fed18d96aefd
          Copyright © 2019 American Chemical Society

          This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.

          History
          : 12 December 2018
          : 20 January 2019
          Categories
          Letter
          Custom metadata
          nl8b04972
          nl-2018-04972s

          Nanotechnology
          super-hydrophobicity,super-oleophobicity,super-amphiphobicity,super-omniphobicity,liquid repellency,surface energy density

          Comments

          Comment on this article