Branched Hydrocarbon Low Surface Energy Materials for Superhydrophobic Nanoparticle Derived Surfaces

Shirin Alexander, Julian Eastoe, Alex M. Lord, Frédéric Guittard, Andrew R. Barron*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

89 Citations (Scopus)
336 Downloads (Pure)

Abstract

We present a new class of superhydrophobic surfaces created from low-cost and easily synthesized aluminum oxide nanoparticles functionalized carboxylic acids having highly branched hydrocarbon (HC) chains. These branched chains are new low surface energy materials (LSEMs) which can replace environmentally hazardous and expensive fluorocarbons (FCs). Regardless of coating method and curing temperature, the resulting textured surfaces develop water contact angles (θ) of ∼155° and root-mean-square roughnesses (Rq) ≈ 85 nm, being comparable with equivalent FC functionalized surfaces (θ = 157° and Rq = 100 nm). The functionalized nanoparticles may be coated onto a variety of substrates to generate different superhydrophobic materials.

Original languageEnglish
Pages (from-to)660-666
Number of pages7
JournalACS Applied Materials and Interfaces
Volume8
Issue number1
DOIs
Publication statusPublished - 13 Jan 2016

Keywords

  • alumina nanoparticles
  • fluorinated acids
  • hyperbranched carboxylic acids
  • low surface energy materials
  • superhydrophobic hydrocarbon surfaces

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