Habit and morphology study on the palm-based 9,10-dihydroxystearic acid (DHSA) crystals
Dihydroxystearic acid (DHSA) and its derivatives are hydroxyl fatty acids suitable to be used as multipurpose intermediates in the synthesis of personal care products and decorative cosmetics. In Malaysia, DHSA has been successfully produced from palm-based oleic acid, via epoxidation with per-formi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2009
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| Online Access: | http://psasir.upm.edu.my/id/eprint/14955/ http://psasir.upm.edu.my/id/eprint/14955/1/Habit%20and%20morphology%20study%20on%20the%20palm-based%209%2C10-dihydroxystearic%20acid%20%28DHSA%29%20crystals.pdf |
| _version_ | 1848842542327529472 |
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| author | Koay, Gregory Feng Ling Chuah, Teong Guan Zainal Abidin @ Murad, Sumaiya Ahmad, Salmiah Choong, Thomas Shean Yaw |
| author_facet | Koay, Gregory Feng Ling Chuah, Teong Guan Zainal Abidin @ Murad, Sumaiya Ahmad, Salmiah Choong, Thomas Shean Yaw |
| author_sort | Koay, Gregory Feng Ling |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Dihydroxystearic acid (DHSA) and its derivatives are hydroxyl fatty acids suitable to be used as multipurpose intermediates in the synthesis of personal care products and decorative cosmetics. In Malaysia, DHSA has been successfully produced from palm-based oleic acid, via epoxidation with per-formic acid followed with hydrolysis of the epoxide. The objective of this paper is to study the crystals of DHSA produced under different crystallization conditions. The crystal habit and morphology were observed in terms of scanning electron microscopy (SEM) and X-ray diffraction (XRD). Results show that solvent type, solvent concentration and cooling mode affect the crystal habit but not the morphology. The DHSA crystals agglomerated into either sphere-like or plate-like habit structure while always maintaining the triclinic crystal system. |
| first_indexed | 2025-11-15T08:00:47Z |
| format | Article |
| id | upm-14955 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T08:00:47Z |
| publishDate | 2009 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-149552019-05-08T07:44:17Z http://psasir.upm.edu.my/id/eprint/14955/ Habit and morphology study on the palm-based 9,10-dihydroxystearic acid (DHSA) crystals Koay, Gregory Feng Ling Chuah, Teong Guan Zainal Abidin @ Murad, Sumaiya Ahmad, Salmiah Choong, Thomas Shean Yaw Dihydroxystearic acid (DHSA) and its derivatives are hydroxyl fatty acids suitable to be used as multipurpose intermediates in the synthesis of personal care products and decorative cosmetics. In Malaysia, DHSA has been successfully produced from palm-based oleic acid, via epoxidation with per-formic acid followed with hydrolysis of the epoxide. The objective of this paper is to study the crystals of DHSA produced under different crystallization conditions. The crystal habit and morphology were observed in terms of scanning electron microscopy (SEM) and X-ray diffraction (XRD). Results show that solvent type, solvent concentration and cooling mode affect the crystal habit but not the morphology. The DHSA crystals agglomerated into either sphere-like or plate-like habit structure while always maintaining the triclinic crystal system. Elsevier 2009 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/14955/1/Habit%20and%20morphology%20study%20on%20the%20palm-based%209%2C10-dihydroxystearic%20acid%20%28DHSA%29%20crystals.pdf Koay, Gregory Feng Ling and Chuah, Teong Guan and Zainal Abidin @ Murad, Sumaiya and Ahmad, Salmiah and Choong, Thomas Shean Yaw (2009) Habit and morphology study on the palm-based 9,10-dihydroxystearic acid (DHSA) crystals. Materials Chemistry and Physics, 114 (1). pp. 14-17. ISSN 0254-0584; ESSN: 1879-3312 https://www.sciencedirect.com/science/article/pii/S025405840800775X#! 10.1016/j.matchemphys.2008.09.069 |
| spellingShingle | Koay, Gregory Feng Ling Chuah, Teong Guan Zainal Abidin @ Murad, Sumaiya Ahmad, Salmiah Choong, Thomas Shean Yaw Habit and morphology study on the palm-based 9,10-dihydroxystearic acid (DHSA) crystals |
| title | Habit and morphology study on the palm-based 9,10-dihydroxystearic acid (DHSA) crystals |
| title_full | Habit and morphology study on the palm-based 9,10-dihydroxystearic acid (DHSA) crystals |
| title_fullStr | Habit and morphology study on the palm-based 9,10-dihydroxystearic acid (DHSA) crystals |
| title_full_unstemmed | Habit and morphology study on the palm-based 9,10-dihydroxystearic acid (DHSA) crystals |
| title_short | Habit and morphology study on the palm-based 9,10-dihydroxystearic acid (DHSA) crystals |
| title_sort | habit and morphology study on the palm-based 9,10-dihydroxystearic acid (dhsa) crystals |
| url | http://psasir.upm.edu.my/id/eprint/14955/ http://psasir.upm.edu.my/id/eprint/14955/ http://psasir.upm.edu.my/id/eprint/14955/ http://psasir.upm.edu.my/id/eprint/14955/1/Habit%20and%20morphology%20study%20on%20the%20palm-based%209%2C10-dihydroxystearic%20acid%20%28DHSA%29%20crystals.pdf |