Characterization of adsorbents with polar bonded stationary phases by determination of surface free energy components by a thin layer wicking method

2002 ◽  
Vol 15 (3) ◽  
pp. 214-219 ◽  
Author(s):  
Monika Waksmundzka-Hajnos ◽  
Mieczyslaw Hajnos ◽  
Ryszard Świeboda ◽  
Anna Hawrył
Keyword(s):  
Free Energy ◽  
Thin Layer ◽  
Surface Free Energy ◽  
Stationary Phases ◽  
Bonded Stationary Phases ◽  
Energy Components

scholarly journals Determination of surface free energy components of organic liquids by the thin layer wicking method

2017 ◽  
Vol 71 (2) ◽  
pp. 11
Author(s):  
Lucyna Hołysz ◽  
Aleksandra Szcześ
Keyword(s):  
Free Energy ◽  
Thin Layer ◽  
Surface Free Energy ◽  
Direct Measurement ◽  
Electron Donor ◽  
Penetration Rate ◽  
Organic Liquids ◽  
Porous Layers ◽  
Energy Components

<p><span lang="EN-US">Using the layer wicking method (TLW method) the electron-donor interactions of surface free energy of the organic liquids: benzene (C<sub>6</sub>H<sub>6</sub>), toluene C<sub>6</sub>H<sub>5</sub>CH<sub>3</sub>), and tetrahydrofuran ((CH<sub>2</sub>)<sub>4</sub>O) was determined. <span lang="EN-US">For this purpose the penetration rate measurements of these liquids in the porous layers of silica gel and alumina were performed. </span></span>The obtained values of the electron-donor parameter of surface free energy of the studied organic liquids were compared with the literature data obtained by the direct measurement of the interface tensions of water/organic liquids.</p>

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

2017 ◽  
Vol 35 (7-8) ◽  
pp. 647-659 ◽  
Author(s):  
Emil Chibowski
Keyword(s):  
Contact Angle ◽  
Free Energy ◽  
Experimental Determination ◽  
Surface Free Energy ◽  
Solid Surface ◽  
Contact Angles ◽  
Absolute Value ◽  
Receding Contact

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.

Determination of the galena surface free energy components from contact angle measurements

1992 ◽  
Vol 31 (3) ◽  
pp. 235-241 ◽  
Author(s):  
Bronisław Jańczuk ◽  
Wiesław Wójcik ◽  
Anna Zdziennicka ◽  
Fernando González-Caballero
Keyword(s):  
Contact Angle ◽  
Free Energy ◽  
Surface Free Energy ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Energy Components

Determination of porous glass surface free energy components from contact angles

1990 ◽  
Vol 25 (3) ◽  
pp. 1682-1685 ◽  
Author(s):  
Bronisław Jańczuk ◽  
Tomasz Białopiotrowicz ◽  
Emil Chibowski ◽  
Andrzej Dawidowicz ◽  
Anna Kliszcz
Keyword(s):  
Free Energy ◽  
Surface Free Energy ◽  
Porous Glass ◽  
Glass Surface ◽  
Contact Angles ◽  
Energy Components

Determination of the Carbon Black Surface Free Energy Components from the Heat of Immersion Measurements

Langmuir ◽  
1997 ◽  
Vol 13 (22) ◽  
pp. 5991-5994 ◽  
Author(s):  
M. L. González-Martín ◽  
B. Jańczuk ◽  
L. Labajos-Broncano ◽  
J. M. Bruque
Keyword(s):  
Free Energy ◽  
Carbon Black ◽  
Surface Free Energy ◽  
Heat Of Immersion ◽  
Carbon Black Surface ◽  
Black Surface ◽  
Energy Components

Determination of surface free energy components of marble

1983 ◽  
Vol 96 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Bronislaw Jańczuk ◽  
Emil Chibowski ◽  
Piotr Staszczuk
Keyword(s):  
Free Energy ◽  
Surface Free Energy ◽  
Energy Components

Surface free energy components of .alpha.-alumina from thin-layer wicking

Langmuir ◽  
1992 ◽  
Vol 8 (2) ◽  
pp. 717-721 ◽  
Author(s):  
Lucyna Holysz ◽  
Emil Chibowski
Keyword(s):  
Free Energy ◽  
Thin Layer ◽  
Surface Free Energy ◽  
Alpha Alumina ◽  
Energy Components
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