The critical surface tension of Polish c
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Wiesz.xl;law Wójcik; Tomasz Biaz.xl;lopiotrowicz; Bronisz.xl;law Jańczuk
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Article
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1988
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Elsevier Science
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English
⚖ 544 KB
## Measurement of the contact angle of water, glycerol, formamide. methylene iodide, cc-bromonaphthalene, ethylene glycol and its aqueous solutions was carried out on the surface of Polish coal of rank 3 1.1,3 1.2,32.1, 32.2,33,34 and 35. On the basis of these results, the critical surface tension