Hostname: page-component-745bb68f8f-lrblm Total loading time: 0 Render date: 2025-01-07T08:54:30.212Z Has data issue: false hasContentIssue false
  • English
  • Français

DLVO and Non-DLVO Interactions in Hectorite

Published online by Cambridge University Press:  02 April 2024

C. J. van Oss ,
R. F. Giese  and
P. M. Costanzo
C. J. van Oss
Affiliation:
Departments of Microbiology and Chemical Engineering, State University of New York at Buffalo, 3435 Main Street, Buffalo, New York 14214
R. F. Giese
Affiliation:
Department of Geology, State University of New York at Buifalo, 4240 Ridge Lea Road, Amherst, New York 14226
P. M. Costanzo
Affiliation:
Department of Geology, State University of New York at Buifalo, 4240 Ridge Lea Road, Amherst, New York 14226
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 Derjaguin-Landau-Verwey-Overbeek (DLVO) theory sums the attractive van der Waals and repulsive electrostatic forces as a function of separation distance to predict the interaction between charged particles immersed in a liquid. In aqueous media, however, non-electrostatic polar (electron acceptor/electron donor or Lewis acid/base) forces between particles with high energy surfaces often are comparable to, or greater than, the components of DLVO theory. By means of contact angle measurements on smooth self-supporting clay films, the values of the polar surface forces (AB) and the van der Waals forces (LW) of hectorite were measured. Determinations of ζ were used to derive the electrostatic forces (EL). Calculations based on the values obtained for the EL, LW, and AB forces show that for smooth spheres with a radius of 1 µm in a ≥ 0.1 M NaCl solution a net attraction exists leading to flocculation. At NaCl concentrations of ≤ 0.01 M, a repulsion energy of about +500 to +1300 kT exists at separation distances ≤ 50 Å, preventing contact between particles, thus ensuring stability of the colloidal suspension. At these concentrations, theory predicts that small clay particles or edges of clay crystals having an effective radius of curvature ≤ 10 Å should be energetic enough to overcome the repulsion barrier which prevents flocculation. Experimentally, for NaCl solution concentrations of ≥ 0.1 M, suspensions of hectorite particles flocculated, whereas at concentrations of ≥ 0.01 M, the suspensions remained stable. These experimental results agree with the predictions made by summing all three forces, but contradict the calculations based on classical DLVO theory.

Keywords

ColloidContact angleDLVO theoryElectrostatic forcesHectoritePolar forces
Type
Research Article
Information
Clays and Clay Minerals , Volume 38 , Issue 2 , April 1990 , pp. 151 - 159
Copyright
Copyright © 1990, The Clay Minerals Society

References

Ames, L L Jr Sand, L. B. and Goldrich, S. S., 1958 A contribution on the Hector, California bentonite deposit Geochem. Cosmochim. Acta 47 363 – 375.Google Scholar
Chan, D. Y. C., Mitchell, D. J., Ninham, B. W. and Pailthorpe, B. A. (1979) in Water, Vol. 6, Franks, F., ed., Plenum, New York, 239–278.Google Scholar
Chaudhury, M. K., 1984 Short range and long range forces in colloidal and macroscopic systems Buffalo, New York Ph.D. thesis, SUNY at Buffalo.Google Scholar
Christenson, H. K., 1988 Non-DLVO forces between surfaces—Solvation, hydration and capillary effects J. Dispersion Sci. Technol. 9 171 – 206.CrossRefGoogle Scholar
Derjaguin, B. V. and Landau, L., 1941 Acta Physicochim. U.S.S.R. 14 633.Google Scholar
Derjaguin, B. V., 1954 A theory of the heterocoagulation, interaction and adhesion of dissimilar particles in solutions of electrolytes Discuss. Faraday Soc. 18 85 – 98.CrossRefGoogle Scholar
Dupré, A., 1869 Théorie Mécanique de la Chaleur Paris Gauthier-Villars.Google Scholar
Fowkes, F. M. J., 1963 Addition of intermolecular forces at interfaces J. Phys. Chem. 67 2538 – 2541.CrossRefGoogle Scholar
Girifalco, L. A. and Good, R. J., 1957 A theory for the estimation of surface and interfacial energies. I. Derivation and application to interfacial tension J. Phys. Chem. 61 904 – 909.CrossRefGoogle Scholar
Good, R. J. and Girifalco, L. A., 1960 A theory for the estimation of surface and interfacial energies. III, Estimation of surface energies of solids from contact angle data J. Phys. Chem. 64 561 – 565.CrossRefGoogle Scholar
Giiven, N. and Bailey, S. W., 1988 Smectites Hydrous phyllosilicates other than micas Washington, D.C. Mineralogical Society of America 497 – 560.CrossRefGoogle Scholar
Israelachvili, J. N. and McGuiggan, P. M., 1988 Forces between surfaces in liquids Science 241 795 – 800.CrossRefGoogle ScholarPubMed
Jasper, J. J., 1972 The surface tension of pure liquid compounds J. Phys. Chem. Ref. Data 1 841 – 1010.CrossRefGoogle Scholar
Low, P. F., 1987 Structural component of the swelling pressure of clays Langmuir 3 18 – 25.CrossRefGoogle Scholar
Mahanty, J. and Ninham, B. W., 1976 Dispersion Forces New York Academic Press.Google Scholar
Neumann, A. W., Good, R. J., Good, R. J. and Stromberg, R. R., 1979 Techniques of measuring contact angles Surface and Colloid Science, Vol. 2 New York Plenum Press.Google Scholar
Overbeek, J. Th. G., 1988 Double-layer interaction between spheres with unequal surface potentials J. Chem. Soc. Faraday Trans. 1 84 3079 – 3091.CrossRefGoogle Scholar
Overbeek, J. Th. G. and Kruyt, H. R., 1952 Electrokinetics Colloid Science, Vol. 1 Amsterdam Elsevier 194 – 244.Google Scholar
Overbeek, J. Th. G. and Kruyt, H. R., 1952 The interaction between colloidal particles Colloid Science, Vol. 1 Amsterdam Elsevier 245 – 277.Google Scholar
Overbeek, J. Th. G. Wiersema, P. H. and Bier, M., 1967 Interpretation of electrophoretic mobilities Electrophoresis, Vol. 2 New York Academic Press 1 – 52.Google Scholar
Parsegian, V. A., Rand, R. P. and Rau, D. C., 1985 Hydration forces: What next? Chemica Scripta 25 28 – 31.Google Scholar
Rabinovich, Y. I. and Derjaguin, B. V., 1988 Interaction of hydrophobized filaments in aqueous electrolyte solutions Colloids Surfaces 30 243 – 251.CrossRefGoogle Scholar
Thiessen, P. A., 1942 Wechselseitige Adsorption von Kolloiden Z. Elektrochem. 48 675 – 681.Google Scholar
Thiessen, P. A., 1947 Kennzeichnung submikroskopischer Grenzflächenbereiche verschiedener Wirksamkeit Z. An-org. Chem. 253 161 – 169.Google Scholar
van Olphen, H. (1977) An Introduction to Clay Colloid Chemistry: 2nd ed., Wiley, New York, 318 pp.Google Scholar
van Oss, C. J., 1975 The influence of the size and shape of molecules and particles on their electrophoretic mobility Separ. Purif. Meth 4 167 – 188.Google Scholar
van Oss, C. J., Chaudhury, M. K. and Good, R. J., 1987 Monopolar surfaces Advances Colloid and Interface Sci. 28 35 – 64.CrossRefGoogle ScholarPubMed
van Oss, C. J., Chaudhury, M. K. and Good, R. J., 1988 Interfacial Lifshitz-van der Waals and polar interactions in macroscopic systems Chem. Rev. 88 927 – 941.CrossRefGoogle Scholar
van Oss, C. J. and Coakley, W. T., 1988 Mechanisms of successive modes of erythrocyte stability and instability in the presence of various polymers Cell Biophys. 13 141 – 150.CrossRefGoogle ScholarPubMed
van Oss, C. J., Fike, R. M., Good, R. J. and Reinig, J. M., 1974 Cell microelectrophoresis simplified by the reduction and uniformization of the electro-osmotic backflow Anal. Biochem. 60 242 – 251.CrossRefGoogle Scholar
van Oss, C. J., Good, R. J. and Chaudhury, M. K., 1987 Determination of the hydrophobic interaction energy—Application to separation processes Sep. Sci. Tech. 22 1 – 24.Google Scholar
van Oss, C. J., Good, R. J. and Chaudhury, M. K., 1988 Additive and nonadditive surface tension components and the interpretation of contact angles Langmuir 4 884 – 891.CrossRefGoogle Scholar
van Oss, C. J., Good, R. J., Chaudhury, M. K., Ohki, S., Doyle, D., Flanagan, T. D., Hui, S. W. and Mayhew, E., 1988 Estimation of the polar parameters of the surface tensions of liquids or contact angle measurements of gels Membrane Fusion New York Plenum 113 – 122.CrossRefGoogle Scholar
Verwey, E. J. W. and Overbeek, J. Th. G., 1948 Theory of the Stability of Lyophobic Colloids Amsterdam Elsevier.Google Scholar