Thermodynamic Study on Adsorption of the Ternary Two-Phase System of Water-Nonane-Ethylene Glycol Monobutyl Ether
✍ Scribed by Makoto Aratono; Fujiharu Nagoya; Takanori Takiue; Norihiro Ikeda
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 236 KB
- Volume
- 165
- Category
- Article
- ISSN
- 0021-9797
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✦ Synopsis
The interfacial tension (\gamma) of the ternary two-phase system of water-nonane-ethylene glycol monobutyl ether (\left(C_{4} E_{1}\right)) was measured as a function of the total mole fraction of (\mathrm{C}{4} \mathrm{E}{1}) at six temperatures under atmospheric pressure. To analyze the experimental results thermodynamically, it was shown that the (\gamma) value slould be plotted not against the total mole fraction of (\mathrm{C}{4} \mathrm{E}{1}) but against the equilibrium mole fraction in the nonane and water phases. It was found that the entropy of adsorption of (\mathrm{C}{4} \mathrm{E}{1}) from the nonane phase decreases and that from the water phase increases, compared to the entropy of the pure nonane/water interface formation, with increasing surface density of (C_{4} E_{1}). Adsorption was discussed on the basis of the thermodynamic quantities of adsorption and transfer of (\mathrm{C}{4} \mathrm{E}{1}) molecules. (Q) 1994 Academic Press, inc.