Fabrication of semi-transparent superoleophobic thin film by nanoparticle-based nano-microstructures on see-through fabrics

Shingo Nishizawa, Seimei Shiratori

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Superoleophobic thin films have many potential applications including fluid transfer, fluid power systems, stain-resistant and antifouling materials, and microfluidics. Transparency is also desired with superhydrophobicity for numerous applications; however, transparency and oleophobicity are almost incompatible with each other from the point of view of surface structure. Oleophobicity requires a rougher structure on the nano-microscale than hydrophobicity, and this rough structure brings light scattering. So far, there are few reports of compatible transparency and superoleophobicity. In this report, we propose see-through-type fabrics having nanoparticle-based hierarchical structure thin films to improve both oleophobicity and transparency. The vacant space between the fibers of the fabric has two important roles: to allow light to pass through and to induce an air layer to produce a Cassie state of a liquid droplet on the resulting thin film. To realize a low surface energy and nanoscale rough structured surface on fabric fibers, we used a spray method with perfluoroalkyl methacrylic copolymer, silica nanoparticles, and volatile solvent. Scanning electron microscopy images revealed that hierarchical nanoparticle structures were uniformly formed on the fabrics. The transparency of the obtained thin film was approximately 61 %, and the change of transparency between the non-coated and coated fabrics was 11 %. The contact angles of oil (rapeseed oil and hexadecane) and water droplets on the fabricated film were observed to be over 150 during investigation of its surface wettability.

Original languageEnglish
Pages (from-to)6613-6618
Number of pages6
JournalJournal of Materials Science
Volume48
Issue number19
DOIs
Publication statusPublished - 2013 Oct

Fingerprint

Transparency
Nanoparticles
Fabrication
Thin films
Microstructure
Fluids
Fibers
Hydrophobicity
Interfacial energy
Microfluidics
Surface structure
Silicon Dioxide
Light scattering
Contact angle
Wetting
Coloring Agents
Copolymers
Silica
Scanning electron microscopy
Water

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Fabrication of semi-transparent superoleophobic thin film by nanoparticle-based nano-microstructures on see-through fabrics. / Nishizawa, Shingo; Shiratori, Seimei.

In: Journal of Materials Science, Vol. 48, No. 19, 10.2013, p. 6613-6618.

Research output: Contribution to journalArticle

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