Surface properties of coal particles in aqueous media II. Adhesion of coal particles to polymeric substrates

The adhesion technique for the determination of the surface tension of small particles was used to characterize the surface properties of three types of coal particles. It was found that in aqueous media with relatively high surface tensions the coal particles were very hydrophilic with surface tens...

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Bibliographic Details
Published inColloids and surfaces Vol. 17; no. 2; pp. 143 - 157
Main Authors Absolom, D.R., Eom, K., Vargha-Butler, E.I., Hamza, H.A., Neumann, A.W.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 1986
Elsevier
Subjects
Applied sciences
Coal and derived products
Energy
Exact sciences and technology
Fuels
Structure, chemical and physical properties
Measurement
Support
Aqueous medium
Coal
Surface properties
Pulverized coal
Influence
Surface tension
Physical properties
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Summary:The adhesion technique for the determination of the surface tension of small particles was used to characterize the surface properties of three types of coal particles. It was found that in aqueous media with relatively high surface tensions the coal particles were very hydrophilic with surface tension values in the 65–70 mJ m −2 range. These findings are in good agreement with data obtained from other techniques. Exploratory measurements at low surface tensions give an indication of the hydrophobic nature of coal, which normally manifests itself when suspended in organic media.
ISSN:0166-6622
1873-4340
DOI:10.1016/0166-6622(86)80242-6