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Electric birefringence for monitoring size changes in clay suspensions

Published online by Cambridge University Press:  09 July 2018

I. C. Hinds ,
P. J. Ridler  and
B. R. Jennings
I. C. Hinds
Affiliation:
School of Electronic, Electrical and lnfbrmation Engineering, South Bank University, London, UK
P. J. Ridler
Affiliation:
School of Electronic, Electrical and lnfbrmation Engineering, South Bank University, London, UK
B. R. Jennings
Affiliation:
School of Electronic, Electrical and lnfbrmation Engineering, South Bank University, London, UK
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Abstract

The growth and decay rates of rapid, induced electro-optical phenomena in dilute colloidal suspensions are characteristic of the geometry of the solute particles. The speed of measurement renders such methods especially relevant for fast, in situ analyses of the size and size distribution of colloids in practical, industrial situations where these properties may be undergoing continuous change. The principles of the measurement of electrically induced birefringence using pulsed fields is outlined and used to study vermiculite suspensions as they undergo size reduction in an ultrasonic field. The high sensitivity of the method to both the particle size range and the form of the distribution function is indicated. The use of the method for on-line monitoring of dilute mineral suspensions for the indication and control of aggregated, dissolving or growing media is discussed.

Type
Research Article
Information
Clay Minerals , Volume 31 , Issue 4 , December 1996 , pp. 549 - 556
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1996

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References

Benoit, H. (1951) Study of the Kerr effect by dilute solutions of rigid macromolecules. Ann. Phys. (Paris) 6, 561–609.Google Scholar
Fredericq, E. & Houssier, C. (1973) Electric Dichroism and Electric Birefringence. Clarendon Press, Oxford.Google Scholar
Morris, V.J., Foweraker, A.R. & Jennings, B.R. (1978a) Particle size distributions from transient electric birefringence data. I. Polydisperse rods by twoparameter distribution functions. Adv. Molec. Relax. Inter. Proc. 12, 65–83.Google Scholar
Morris, V.J., Foweraker, A.R. & Jennings, B.R. (1978b) Particle size distributions from transient electric birefringence data. II. Polydisperse discs by twoparameter distribution functions. Adv. Molec. Relax. Inter. Proc. 12, 201–210.Google Scholar
Morris, V.J., Foweraker, A.R. & Jennings, B.R. (1978c) Particle size distributions from transient electric birefringence data. III. Polydisperse ellipsoids by two-parameter distribution functions. Adv. Molec. Relax. Inter. Proc. 12, 220–240.Google Scholar
Oakley, D.M. & Jennings, B.R. (1982) Clay particle sizing by electrically induced birefringence. Clay Miner. 17, 313–325.Google Scholar
Perrin, F. (1934) Mouvement Brownien D'un Ellipsoide (I) Dispersion Dielectrique pour des molecules ellipsoidales. J. Phys. Rad. Ser. vii, 5, 497–510.Google Scholar
Peterlin, A. & Stuart, H.A. (1943) Doppelbrechung, Inshesondere Kunstliche Doppelbrechung. Pp. 1 – 115 in: Hand und Jahrbuch der Chemischen Physik (Eucken, A. & Wolf, K.L., editors) Bd, 8, Abt lB.Google Scholar
Potter, M.J. (1994) Minerals review. Am. Cerarn. Soc. Bull. 6,73, 136–139.Google Scholar
Schweitzer, J.R. & Jennings, B.R. (1972) Electro-optical decay analysis for polydisperse systems. Biopolymers, 11, 1077–1089,Google Scholar
Stoylov, S.P. (1971) Colloid electro-optics. Electrically induced optical phenomena in disperse systems. Adv. Coll. Interf. Sci. 3, 45–110.Google Scholar
Van Olphen, H. (1977) An Introduction to Clay Colloid Chemistry, John Wiley & Sons Inc., London.Google Scholar
Watson, R.M.J. & Jennings, B.R. (1992) Polydisperse size data from single electric birefringence transients. Powder Technology, 72, 63–69.Google Scholar