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Habit and morphology study on the palm-based 9,10-dihydroxystearic acid (DHSA) crystals


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


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.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Institute of Tropical Forestry and Forest Products
DOI Number: https://doi.org/10.1016/j.matchemphys.2008.09.069
Publisher: Elsevier
Keywords: Crystal structure; Crystallization; Electron microscopy; X-ray diffraction topography
Depositing User: Nabilah Mustapa
Date Deposited: 08 May 2019 07:44
Last Modified: 08 May 2019 07:44
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.matchemphys.2008.09.069
URI: http://psasir.upm.edu.my/id/eprint/14955
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