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Swelling of n-Butylammonium Vermiculite in Water

Published online by Cambridge University Press:  02 April 2024

L. F. Braganza ,
R. J. Crawford ,
M. V. Smalley  and
R. K. Thomas
L. F. Braganza
Affiliation:
Institut Laue-Langevin, Grenoble, 38042 Cedex, France
R. J. Crawford
Affiliation:
Physical Chemistry Laboratory, South Parks Road, Oxford, OX1 3QZ, United Kingdom
M. V. Smalley
Affiliation:
Physical Chemistry Laboratory, South Parks Road, Oxford, OX1 3QZ, United Kingdom
R. K. Thomas
Affiliation:
Physical Chemistry Laboratory, South Parks Road, Oxford, OX1 3QZ, United Kingdom
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Abstract

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The swelling of an n-butylammonium vermiculite in solutions of n-butylammonium chloride has been studied by neutron diffraction as a function of temperature and the concentration of the soaking solution. On heating a swollen sample a transition to the crystalline phase took place at a well-defined temperature, the c-axis spacing changing from 120 to 19.4 Å at 14°C in a 0.1 M solution and from 330 to 19.4 Å at 33°C in a 0.01 M solution. The phase transition was completely reversible, and a study of the temperature-concentration phase diagram was made as high as 50°C The swollen phase was studied in a range of concentrations of the external solution between 0.2 M and 5 × 10-4 M, for which the c-axis spacings were 85 and 910 Å, respectively. The reversibility, sharpness, and reproducibility of the phase change from crystalline to swollen gel suggest that the transition is truly thermodynamic, which is not in accord with DLVO theory. The concentration dependence of the observed d-values also could not be explained satisfactorily by DLVO theory.

Keywords

DLVO theoryn-Butylammonium chlorideNeutron diffractionSwellingVermiculite
Type
Research Article
Information
Clays and Clay Minerals , Volume 38 , Issue 1 , February 1990 , pp. 90 - 96
Copyright
Copyright © 1990, The Clay Minerals Society

References

Brindley, G. W. and Simonton, T. C., 1984 Apparent long spacings from clay-water gels, glasses, and crystalline materials due to total reflection of X-rays Clays & Clay Minerals 32 235 – 237.CrossRefGoogle Scholar
de Boer, J. H., 1936 The influence of van der Waals forces and primary bonds of binding energy, strength and orientation, with special reference to some artificial resins Trans. Faraday Soc. 32 10 – 38.CrossRefGoogle Scholar
Derjaguin, B. V., Churaev, N. V. and Muller, V. M., 1987 Surface Forces New York Plenum 293 – 295.CrossRefGoogle Scholar
Garrett, W. G., Walker, G. F. and Swineford, A., 1962 Swelling of some vermiculite-organic complexes in water Clays and Clay Minerals, Proc. 9th Natl. Conf., West Lafayette, Indiana, I960 New York Pergamon Press 557 – 567.Google Scholar
Hamaker, H. C., 1937 The London-van der Waals attraction between spherical particles Physica 4 1058 – 1072.CrossRefGoogle Scholar
Humes, R. P., 1985 Interparticle forces in clay minerals United Kingdom Oxford University, Oxford 140 – 153.Google Scholar
Hunter, R. J., 1987 Foundations of Colloid Science Oxford Clarendon Press 428 – 431.Google Scholar
Institut Laue-Langevin, 1986 Neutron Research Facilities at the High High Flux Reactor France Institut Laue-Langevin, Grenoble 37 – 39.Google Scholar
Lifschitz, E. M., 1955 Effect of temperature on the molecular attracting forces between condensed bodies Zh. Eksp. Teor. Fiz. 29 94 – 110.Google Scholar
Norrish, K., Rausel-Colom, J. A., Swineford, A. and Franks, P. C., 1963 Low angle X-ray diffraction studies of the swelling of montmorillonite and vermiculite Clays and Clay Minerals, Proc. 10th Natl. Conf, Austin, Texas, 1961 New York Pergamon Press 123 – 149.Google Scholar
Rausel-Colom, J. A., 1964 Small angle X-ray diffraction study of the swelling of butylammonium vermiculite Trans. Far. Soc. 60 190 – 201.CrossRefGoogle Scholar
Simonton, T. C., 1984 Apparent long spacings from clay-water gels, glasses, and crystalline materials due to total reflection of X-rays; Reply to comment Clays & Clay Minerals 33 472.CrossRefGoogle Scholar
van der Gaast, S. J. and Jansen, J. H. F., 1985 Apparent long spacings from clay-water gels, glasses, and crystalline materials due to total reflection of X-rays; A comment Clays & Clay Minerals 33 471 – 472.CrossRefGoogle Scholar
van Olphen, H., 1977 An Introduction to Clay Colloid Chemistry 2nd ed. New York Wiley 150 – 161.Google Scholar
Viani, B. V., Low, P. F. and Roth, C. B., 1983 Direct measurement of the relation between interlayer force and interlayer distance in the swelling of montmorillonite J. Colloid Interface Sci. 96 229 – 244.CrossRefGoogle Scholar
Viani, B. E., Roth, C. B. and Low, P. F., 1985 Direct measurement of the relation between swelling pressure and interlayer distance in Li-vermiculite Clays & Clay Minerals 33 244 – 250.CrossRefGoogle Scholar
Walker, G. F., 1960 Macroscopic swelling of vermiculite crystals in water Nature 187 312 – 313.CrossRefGoogle Scholar