Phase Equilibria of a Mixed Alkali Soap/ Carboxylic Acid/Water System
A preliminary investigation was carried out on the phase equilibria in the three component systems, water/sodium caprylate/octanoic acid, water/sodium caprylate and sodium dodecyl sulphate (l:1) / octanoic acid at 30°C. The phases were separated by repeated centrifugation. The birefringence was ob...
Saved in:
| Main Authors: | , , |
|---|---|
| 格式: | Article |
| 語言: | English English |
| 出版: |
Universiti Putra Malaysia Press
1993
|
| 在線閱讀: | http://psasir.upm.edu.my/id/eprint/3088/1/Phase_Equilibria_of_a_Mixed_Alkali_Soap.pdf http://psasir.upm.edu.my/id/eprint/3088/ |
| 標簽: |
添加標簽
沒有標簽, 成為第一個標記此記錄!
|
| 總結: | A preliminary investigation was carried out on the phase equilibria in the three
component systems, water/sodium caprylate/octanoic acid, water/sodium caprylate and sodium dodecyl sulphate (l:1) / octanoic acid at 30°C. The phases
were separated by repeated centrifugation. The birefringence was observed under cross-polarisers and their consistency, texture and optical pattern were
examined under the polarizing microscope.
On the basis of the results obtained, a phase diagram was drawn that includes two phases of isotropic solution and two mesophases. Results also
showed a decreased amount of octanoic acid utilized in obtaining the lamellar liquid crystal phase. The critical micelle concentration was also reduced for the
mixed surfactant system |
|---|