Particle size distribution from transient electric birefringence data: III. polydisperse ellipsoids by two-parameter distribution functions

Morris, Victor J.; Foweraker, A.R.; Jennings, B. R.

doi:10.1016/0378-4487(78)80029-6

Cited by 26 publications

(8 citation statements)

References 4 publications

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“…For non-interacting plates of large aspect, ratio and radius "a" theory [13] predicts that For non-interacting plates of large aspect, ratio and radius "a" theory [13] predicts that…”

Section: -mentioning

confidence: 99%

Experimental results for the L3 phase in a zwitterionic surfactant system and their implications regarding structures

Miller

Gradzielski

Hoffmann

et al. 1990

Colloid & Polymer Sci

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Conditions for existence of the L3 phase have been determined for a system containing water, n-hexanol, and the zwitterionic surfactant n-tetradecyldimethylamineoxide. Electric birefringence, light-scattering, rheology, and electrical-conductivity experiments were performed on this phase. Results are consistent with the existence of platelike micelles, whose diameter changes with surfactant concentration in such a way that it remains comparable to mean plate spacing. This behavior can be understood in terms of a previous L3 phase theory containing randomly oriented plates.

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“…For non-interacting plates of large aspect, ratio and radius "a" theory [13] predicts that For non-interacting plates of large aspect, ratio and radius "a" theory [13] predicts that…”

Section: -mentioning

confidence: 99%

Experimental results for the L3 phase in a zwitterionic surfactant system and their implications regarding structures

Miller

Gradzielski

Hoffmann

et al. 1990

Colloid & Polymer Sci

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“…Non-identity signifies non-sphericity and can be used as a measure of it. Recently, electrooptical methods have been developed in this research team for particle size analysis (Morris et al 1978; Parslow & influence of pulsed force fields (electric, magnetic, etc.) particles in suspension rotate and partially align, as controlled by their rotary diffusion coefficients (Z)R).…”

Section: Introductionmentioning

confidence: 99%

Particle size measurement: the equivalent spherical diameter

1988

Proc. R. Soc. Lond. A

194

104

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In particle size analysis, it is commonplace to analyse data for anisodiametric particles as if the particles were spheres. Expressions are given herein for the equivalent spherical diameters (ESD) for discs, rods and the more general oblate and prolate spheroids. The dependence of the ESD on the true major dimension and axial ratio differs with the physical basis of measurement, and identity of the ESD values from different methods cannot be expected. A comparison between any two sets of experimental data leads to estimation of the minor particle dimension and a quantitative measure of the particle non-sphericity.

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“…With a heterogeneous sample, this coefficient is multi-component, so that the initial slope of a semi-log plot is used to define an experimental average D i . Initially, James [7] used the equations developed for transient electric birefringence [38][39][40] to analyse the initial slopes of the transient decay rates for pulses at low and high field strengths. These gave the spread of particle size for a log-normal fit, assuming the particles to have a permanent dipole alone.…”

Section: Particle Sizementioning

confidence: 99%