Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-27T22:23:25.386Z Has data issue: false hasContentIssue false
  • English
  • Français

Components of Surface Free Energy of Some Clay Minerals

Published online by Cambridge University Press:  02 April 2024

Broniseaw Jańczuk  and
Tomasz Białopiotrowicz
Broniseaw Jańczuk
Affiliation:
Department of Physical Chemistry, Institute of Chemistry, Maria Curie-Sktodowska University, 20-031 Lublin, Poland
Tomasz Białopiotrowicz
Affiliation:
Department of Physical Chemistry, Institute of Chemistry, Maria Curie-Sktodowska University, 20-031 Lublin, Poland
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The wetting contact angle was measured for water drops settled on the surface of pressed discs of kaolinite, alumina, bentonite, marble, montmorillonite, and quartzite immersed in hexane, octane, dodecane, cis-decalin, and air. Minimum and maximum values of the contact angle were obtained for the given systems of solid-water drop-hydrocarbon, depending on the manner of disc preparation. Using both minimum (θmin) and maximum (θmax) values of the contact angle, values of the dispersion component (γsd) of surface free energy of these solids were calculated from the equation which was derived on the basis of an equilibrium state of the system solid-water drop-hycrocarbon for two different hydrocarbons. The values of γsd for kaolinite, alumina, bentonite, marble, montmorillonite, and quartzite obtained from θmin are 83.5, 98.1, 98.9, 80.2, 95.9, and 89.7 mJ/m2, and from θmax are 73.1, 85.0, 84.4, 75.8, 85.5, and 75.5 mJ/m2. These values for marble and quartzite are similar to those in the literature (marble = 67.7 mJ/m2; quartzite = 71.3 and 76.0 mJ/m2). The values of the dispersion components of surface free energy for marble and quartzite covered with a water film (γsfd) were found to be: 41.8, 36.9; 49.2, 42.5; 49.6, 42.2; 40.2, 38.1; 48.1, 42.8; and 44.9, 38.0 mJ/m2, respectively. Values of γsfd for kaolinite, bentonite, and montmorillonite agreed well with those obtained from hydrocarbon adsorption isotherms determined by differential thermal analysis (35.5, 36.5, and 37.4 mJ/m2).

Using values of γsfd and contact angles measured in the system solid-water drop-air, the nondispersion component of the surface free energy of solids with adsorbed water film (γsfn) was calculated from the modified Young equation. The values of γsfn for kaolinite and quartzite are as follows: 55.8, 69.0; 85.6, 94.0; 52.1, 75.0; 64.7, 68.9; 54.9,71.3; and 59.2,74.4 mJ/m2. The values of the nondispersion components determined for kaolinite, bentonite, and montmorillonite agreed well with those obtained by differential thermal analysis (67.6, 78.3, and 65.5 mJ/m2, respectively). Further, based on the assumption that the adsorbed water film decreased the surface free energy of these solids by the value of the work of spreading wetting, the nondispersion component (γsn) of the surface free energy of the solids was calculated to be: 86.9,129.6; 169.5, 187.7; 67.1, 144.8; 117.5, 129.3; 83.0, 135.7 and 100.2, 143.4 mJ/m2. These calculated values of the nondispersion component of marble and quartzite surface free energy agree with those obtained from adsorption isotherms determined by chromatographic and differential thermal analysis (marble = 103.8, 106.4; quartzite = 112, 115, 153.6 mJ/m2).

Keywords

BentoniteDispersionFree energyKaoliniteMontmorilloniteSurfaceWetting contact angle
Type
Research Article
Information
Clays and Clay Minerals , Volume 36 , Issue 3 , June 1988 , pp. 243 - 248
Copyright
Copyright © 1988, The Clay Minerals Society

References

Bagrov, A. A., 1968 Investigation of the dependence of plasticity of the clay-water system on the dispersed phase concentration Colloid. J. U.S.S.R. 30 486 – 489.Google Scholar
Conley, R. F. and AlthofF, A. C., 1971 Surface acidity in kaolinites J. Colloid Interface Sci. 37 186 – 195.CrossRefGoogle Scholar
Fowkes, F. M., 1964 Attractive forces at interface Ind. Eng. Chem. 56 12 40 – 52.CrossRefGoogle Scholar
Good, R. J. and Elbing, E., 1970 Generalization of theory for estimation of interfacial energies Ind. Eng. Chem. 3 54 – 78.CrossRefGoogle Scholar
Jańczuk, B. and Biafopiotrowicz, T., 1986 Spreading of a water drop on a marble surface J. Mater. Sci. 21 1151 – 1154.CrossRefGoogle Scholar
Janczuk, B. and Chibowski, E., 1983 Interpretation of contact angle in solid-hydrocarbon-water system J. Colloid Interface Sci. 95 268 – 270.CrossRefGoogle Scholar
Janczuk, B., Chibowski, E. and Białopiotrowicz, T., 1984 Interpretation of the contact angle in quartz/organic liquid film-water system J. Colloid Interface Sci. 102 533 – 538.CrossRefGoogle Scholar
Janczuk, B., Chibowski, E. and Białopiotrowicz, T., 1986 Time dependence wettability of quartz with water Chem. Paper 40 349 – 356.Google Scholar
Janczuk, B., Chibowski, E. and Staszczuk, P., 1983 Determination of surface free energy components of marble J. Colloid Interface Sci. 96 1 – 6.CrossRefGoogle Scholar
Kitazaki, Y. and Hata, T., 1972 Surface-chemical criteria for optimum adhesion J. Adhesion 4 123 – 133.CrossRefGoogle Scholar
Staszczuk, P., 1985 Application of the chromatographic step profile method for determination of water film pressure and surface free energy of quartz Chromatographia 20 724 – 728.CrossRefGoogle Scholar
Staszczuk, P., Janczuk, B. and Chibowski, E., 1985 On the determination of the surface free energy of quartz Mater. Chem. Phys. 12 469 – 481.CrossRefGoogle Scholar
Swartzen-Allen, S. L. and Matijevic, E., 1974 Surface and colloid chemistry of clays Chem. Rev. 74 385 – 400.CrossRefGoogle Scholar
Tamai, Y., Makuuchi, K. and Suzuki, M., 1967 Experimental analysis of interfacial forces at the plane surface of solids J. Phys. Chem. 13 4176 – 4180.CrossRefGoogle Scholar
Weyl, W. A., Ormsby, W. C. and Eirich, F. R., 1960 Atomistic approach to the rheology of sand-water and of clay-water mixtures Rheology— Theory and Applications, Vol. 3 New York, London Academic Press 249 – 297.Google Scholar
Wójcik, W. and Bilinski, B., 1988 Gas adsorption in studies on correlations between the notability of minerals and the work of water adhesion to their surfaces Colloids Surfaces .CrossRefGoogle Scholar
Zimon, A. D., 1974 Adhesion of Liquid and Wettability 52–55 81 – 96.Google Scholar