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...
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| Format: | Article |
| Language: | English English |
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Universiti Putra Malaysia Press
1993
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| Online Access: | http://psasir.upm.edu.my/id/eprint/3088/ http://psasir.upm.edu.my/id/eprint/3088/1/Phase_Equilibria_of_a_Mixed_Alkali_Soap.pdf |
| _version_ | 1848839432112701440 |
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| author | Suhaimi, Hamdan Kassim, Anuar Che Rose, Laili |
| author_facet | Suhaimi, Hamdan Kassim, Anuar Che Rose, Laili |
| author_sort | Suhaimi, Hamdan |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | 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 |
| first_indexed | 2025-11-15T07:11:21Z |
| format | Article |
| id | upm-3088 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T07:11:21Z |
| publishDate | 1993 |
| publisher | Universiti Putra Malaysia Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-30882013-05-27T07:05:38Z http://psasir.upm.edu.my/id/eprint/3088/ Phase Equilibria of a Mixed Alkali Soap/ Carboxylic Acid/Water System Suhaimi, Hamdan Kassim, Anuar Che Rose, Laili 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 Universiti Putra Malaysia Press 1993 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/3088/1/Phase_Equilibria_of_a_Mixed_Alkali_Soap.pdf Suhaimi, Hamdan and Kassim, Anuar and Che Rose, Laili (1993) Phase Equilibria of a Mixed Alkali Soap/ Carboxylic Acid/Water System. Pertanika Journal of Science & Technology, 1 (1). pp. 1-10. ISSN 0128-7680 English |
| spellingShingle | Suhaimi, Hamdan Kassim, Anuar Che Rose, Laili Phase Equilibria of a Mixed Alkali Soap/ Carboxylic Acid/Water System |
| title | Phase Equilibria of a Mixed Alkali Soap/
Carboxylic Acid/Water System |
| title_full | Phase Equilibria of a Mixed Alkali Soap/
Carboxylic Acid/Water System |
| title_fullStr | Phase Equilibria of a Mixed Alkali Soap/
Carboxylic Acid/Water System |
| title_full_unstemmed | Phase Equilibria of a Mixed Alkali Soap/
Carboxylic Acid/Water System |
| title_short | Phase Equilibria of a Mixed Alkali Soap/
Carboxylic Acid/Water System |
| title_sort | phase equilibria of a mixed alkali soap/
carboxylic acid/water system |
| url | http://psasir.upm.edu.my/id/eprint/3088/ http://psasir.upm.edu.my/id/eprint/3088/1/Phase_Equilibria_of_a_Mixed_Alkali_Soap.pdf |