Original scientific paper

The Effect of Propanol on the Contact Angle in the System Graphite/n-Alkane Film-Air Bubble-Solution

Bronislaw Janczuk ; Department of Physical Chemistry, Institute of Chemistry, Maria Curie-Sklodowska University, 20-031 Lublin, Poland

Abstract

Measurements of the contact angle were made in the system
graphite/hydrocarbon film-air bubble-propanol aqueous solution,
Hexane, decane and hexadecane films were tested in propanol
solutions at concentration from O to 300 mg/dm". The results
obtained were compared with those calculated from the modified
GGFY equation (Good-Girifalco-Fowkes-Young). On the basis
of the studies and calculations carried out it has been found that
polar and nonpolar liquids considerably change the wettability
of high-energy hydrophobic graphite. This wettai.Jility depends
on the thickness and nature of nonpolar liquid film on graphite
surface and on the concentration of polar liquid solutions. It has
also been suggested that, in the presenee of polar liquid (propanol)
at the interface of graphite/hydrocarbon film-solution, polar interactions appear between alcohol molecules adsorbed on
the interface and water molecules.

Keywords

Hrčak ID:

177759

URI

https://hrcak.srce.hr/177759

Publication date:

31.10.1985.

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