✦ LIBER ✦
The Effect of Evaporation on Wilhelmy-Type Measurements of Wetting Tension: Is Wetting Equilibrium Reached for Cationic Surfactant Adsorption on Mica?
✍ Scribed by L.G.Tomas Eriksson
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 161 KB
- Volume
- 191
- Category
- Article
- ISSN
- 0021-9797
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✦ Synopsis
equilibrium contact angle; evaporation; hexadecylthe construction of different tensiometers vary, the best way to establish if evaporation takes place or not is to measure the change of liquid level in trimethylammonium bromide (CTAB); mica; surfactant adsorpan actual setup. This can be done by comparing the immersion depth at tion; Wilhelmy plate method. which a plate emerges from the solution (i.e., the meniscus lets go of the plate), provided that the zero setting is stable over a period of one or more days. This is the case with the KSV instrument used in our laboratory. For