Hydrophilization of liquid surfaces by plasma treatment

Victor Multanen, Gilad Chaniel, Roman Grynyov, Ron Yossef Loew, Naor Kyle Siany, Edward Bormashenko

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

The impact of the cold radiofrequency air plasma on the surface properties of silicone oils (polydimethylsiloxane) was studied. Silicone oils of various molecular masses were markedly hydrophilized by the cold air plasma treatment. A pronounced decrease of the apparent water contact angles was observed after plasma treatment. A general theoretical approach to the calculation of apparent contact angles is proposed. The treated liquid surfaces demonstrated hydrophobic recovery. The characteristic time of the hydrophobic recovery grew with the molecular mass of the silicone oil.

Original languageEnglish
Pages (from-to)225-230
Number of pages6
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume461
Issue number1
DOIs
StatePublished - 5 Nov 2014
Externally publishedYes

Keywords

  • Apparent contact angle
  • Change in the surface energy
  • Cold plasma
  • Hydrophilization
  • Hydrophobic recovery
  • Silicone oils

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

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