Particle-size distribution of pigment suspensions -- Determination with a beaker-type centrifuge

Martin, S.

doi:10.1021/ac50137a001

Cited by 13 publications

(4 citation statements)

References 13 publications

(8 reference statements)

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“…Therefore, in order to arrive at some quantitative value for this phenomenon, the calcium carbonate dispersions in the oleoresinous vehicle were subjected to a particle size analysis, using the centrifugal sedimentation technique of Martin (8). The results, expressed in terms of surface area, will be related to the degree of dispersion, since the absolute surface of the base extender is constant, and any variation in this value among the treated carbonates as determined by sedimentation analysis, will be due to flocculation.…”

Section: Determinationmentioning

confidence: 99%

Surface-Treated Calcium Carbonates in a High-Solid Paint System

Kumins¹

1952

Ind. Eng. Chem.

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Section: Determinationmentioning

confidence: 99%

Surface-Treated Calcium Carbonates in a High-Solid Paint System

Kumins¹

1952

Ind. Eng. Chem.

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“…Martin (10) applied Romwalter and Yendl's mathematical analysis to the determination of the particle-size distribution of titanium dioxide pigments in various vehicles. He used Oden's method of tangential intercepts to calculate particle-size distributions of practical pigmentary dispersions.…”

Section: Sedimentationmentioning

confidence: 99%

“…In 1939 Baldes and his collaborators (3, 4) described a modification of the Hill vapor-pressure thermopile (10) for measuring the difference in vapor pressure…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Beaker-Type Centrifugal Sedimentation of Subsieve Solid–Liquid Dispersions. I. Theory

Robison¹,

Martin²

1948

J. Phys. Chem.

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The determination of the specific surface of barium sulphate: A comparison of results by different methods

Jopling

1952

J. Appl. Chem.

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A description is given of the pipette and centrifuge methods of determining grain-size distributions by sedimentation, and results are presented for a number of barium sulphate powders. From the sizedistribution curves, the specific surfaces are calculated and compared with values obtained by air permeability, dye adsorption and a light-extinction method. The results for the dye-adsorption and air-permeability methods are shown to be in good agreement with each other, but do not always agree with the values calculated from the size distribution. It is suggested that this is due to aggregates, instead of discreet particles, settling in the sedimentation analysis, and this view is supported by electron-micrographs. The failure of the optical method is attributed to thc fineness of the powders.Barium sulphate is used in the photographic industry under the name of ' baryta ' or ' blancfure ' for coating paper before the application of the photographic-emulsion coat. The baryta, which is in the form of an aqueous slurry, is applied to the paper in admixture with gelatin, certain dyes, etc. A knowledge of the average particle size and of the particle-size distribution of the baryta is of great importance to the technician, as many of the coating properties, e.g. viscosity, surface quality of the coating, etc., are functions of the particle size.A study has been made of various methods for determining the particle-size distribution and the average particle size of such powders, and the results obtained by these methods have been compared.The powders which were to be examined consisted mainly of particles within the size range of 5 p to o * I p. Many methods, of different degrees of reliability, are available for particle-size measurement in this size range and, of these, the following were chosen for examination: (I) Sedimentation analysis (pipette).(3) Air permeability. 14) Dye adsorption.

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Particle-size distribution of pigment suspensions -- Determination with a beaker-type centrifuge

Cited by 13 publications

References 13 publications

Surface-Treated Calcium Carbonates in a High-Solid Paint System

Surface-Treated Calcium Carbonates in a High-Solid Paint System

Beaker-Type Centrifugal Sedimentation of Subsieve Solid–Liquid Dispersions. I. Theory

The determination of the specific surface of barium sulphate: A comparison of results by different methods

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