Some problems of characterization of a solid surface via the surface free energy changes

During the processes occurring at a solid surface, the changes in the surface free energy take place. The knowledge about surface free energy is very helpful for understanding the processes taking place on the surface. However, experimental determination of solid surface free energy is still not a f...

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Main Author: Emil Chibowski
Format: Article
Language:English
Published: SAGE Publications 2017-09-01
Series:Adsorption Science & Technology
Online Access:https://doi.org/10.1177/0263617417704115
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author Emil Chibowski
author_facet Emil Chibowski
author_sort Emil Chibowski
collection DOAJ
description During the processes occurring at a solid surface, the changes in the surface free energy take place. The knowledge about surface free energy is very helpful for understanding the processes taking place on the surface. However, experimental determination of solid surface free energy is still not a fully solved problem. In this paper, some problems dealing with calculation of solid surface free energy from contact angle are discussed based on literature values of advancing and receding contact angles measured on four different fluoropolymers surface. The four approaches most often used for the calculation are described and especial focus on the approach in which both the advancing and receding contact angles is paid. It is concluded that using probing liquids the absolute value of solid surface free energy cannot be determined. However, the determined apparent values of the energy are very helpful to understand the conditions necessary for a given process to occur.
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spelling doaj.art-74db17ef8a3f41758fe0d8663a925bf92024-03-02T17:08:15ZengSAGE PublicationsAdsorption Science & Technology0263-61742048-40382017-09-013510.1177/0263617417704115Some problems of characterization of a solid surface via the surface free energy changesEmil ChibowskiDuring the processes occurring at a solid surface, the changes in the surface free energy take place. The knowledge about surface free energy is very helpful for understanding the processes taking place on the surface. However, experimental determination of solid surface free energy is still not a fully solved problem. In this paper, some problems dealing with calculation of solid surface free energy from contact angle are discussed based on literature values of advancing and receding contact angles measured on four different fluoropolymers surface. The four approaches most often used for the calculation are described and especial focus on the approach in which both the advancing and receding contact angles is paid. It is concluded that using probing liquids the absolute value of solid surface free energy cannot be determined. However, the determined apparent values of the energy are very helpful to understand the conditions necessary for a given process to occur.https://doi.org/10.1177/0263617417704115
spellingShingle Emil Chibowski
Some problems of characterization of a solid surface via the surface free energy changes
Adsorption Science & Technology
title Some problems of characterization of a solid surface via the surface free energy changes
title_full Some problems of characterization of a solid surface via the surface free energy changes
title_fullStr Some problems of characterization of a solid surface via the surface free energy changes
title_full_unstemmed Some problems of characterization of a solid surface via the surface free energy changes
title_short Some problems of characterization of a solid surface via the surface free energy changes
title_sort some problems of characterization of a solid surface via the surface free energy changes
url https://doi.org/10.1177/0263617417704115
work_keys_str_mv AT emilchibowski someproblemsofcharacterizationofasolidsurfaceviathesurfacefreeenergychanges