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Clay particle sizing by electrically-induced birefringence

D. M. Oakley and B. R. Jennings
Clay particle sizing by electrically-induced birefringence
Clay Minerals (September 1982) 17 (3): 313-325


Under the influence of a pulsed field, dilute clay sols become birefringent as the particles undergo orientational order. The rate of decay of the birefringence on removal of the field is characteristic of the particle geometry. Measurement of the decay rates under two specific experimental conditions provides sufficient information from which the particle-size distribution can be evaluated in terms of a two-parameter function. Experimental data are reported and analysed in terms of a log-normal distribution of particle sizes for attapulgite (rods), kaolinite (discs) and halloysite (ellipsoids) sols and compared with success to electron microscopic data. The ability of the method to determine size distributions in terms of the major dimensions of the clay particles, rather than those of the often used equivalent sphere, is highlighted.

ISSN: 0009-8558
Serial Title: Clay Minerals
Serial Volume: 17
Serial Issue: 3
Title: Clay particle sizing by electrically-induced birefringence
Affiliation: Brunel Univ., Phys. Dep., Uxbridge, Middx. UB8 3PH, United Kingdom
Pages: 313-325
Published: 198209
Text Language: English
Summary Language: French
Summary Language: German
Publisher: Mineralogical Society, London, United Kingdom
References: 12
Accession Number: 1984-001504
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland. Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique, Vandoeuvre-les-Nancy, France
Update Code: 1984
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