4. Calculate the contact angle of wetting the surface of a solid body with a liquid, the values of surface tensions of which and their dispersion components are given in Table 2.8
Solid substance – Cellulose monoacetate
bs mJ/m2 43.5
bsd mJ/m2 27.0
Liquid substance (4 and 9 options)
Option 4
Methyl iodide
b mJ/m2 50.8
bd mJ/m2 28.0
tetraethylene glycol
b mJ/m2 45.6
bd mJ/m2 29.4
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