Two-liquid wetting properties as a surface polarity probe for hydrophobic coatings | Zendy

Gwenaël Bonfante | Zendy; Stéphanie Chevalliot | Zendy; Bérangère Toury | Zendy; B. Berge | Zendy; Mathieu Maillard | Zendy

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Two-liquid wetting properties as a surface polarity probe for hydrophobic coatings

Author(s) -

Gwenaël Bonfante,

Stéphanie Chevalliot,

Bérangère Toury,

B. Berge,

Mathieu Maillard

Publication year - 2017

Publication title -

physical chemistry chemical physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.053

H-Index - 239

eISSN - 1463-9084

pISSN - 1463-9076

DOI - 10.1039/c6cp07392a

Subject(s) - wetting , polarity (international relations) , surface (topology) , surface energy , contact angle , materials science , nanotechnology , chemical engineering , chemical physics , measure (data warehouse) , wetting transition , analytical chemistry (journal) , chemistry , chromatography , composite material , computer science , geometry , biochemistry , mathematics , database , engineering , cell

A model for the spreading of a non-polar liquid on a surface within a polar medium is described theoretically, according to Fowkes, Good and Girifalco approximations on interfacial tension. We demonstrate both theoretically and experimentally that surface polarity measurements using the contact angle of two immiscible liquids minimize drastically the measurement error. The present method has been successfully applied to various substrates of variable polarity and overall surface energy. We also demonstrate that this method allows a direct measurement of surface sensitivity to pH.

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