Characterization of CaCO3 microspheres fabricated using distilled water

Javeed Shaikh, Mohammed and Abd Manaf, Ali and Nadiawati, Alias (2016) Characterization of CaCO3 microspheres fabricated using distilled water. Malaysian Journal of Analytical Sciences, 20 (2). pp. 423-435. ISSN 13942506

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Abstract

Calcium carbonate (CaCO3 ) microspheres (μ-spheres) are widely used as inorganic templates (or cores) for fabricating nanoengineered microcapsules. Deionized water is commonly used in the fabrication of CaCO3 μ-spheres using precipitation reaction between calcium chloride (CaCl2 ) and sodium carbonate (Na2CO3 ) solutions under vigorous stirring. However, in the current work distilled water was used throughout the experiments. Furthermore, two simple fabrication approaches, namely membrane filtration and centrifugation approaches, were used in order to understand the effect of different experimental factors on the size and shape of CaCO3 μ-spheres. For the membrane filtration approach, the experimental factors tested included mixing procedure of solutions, stirring speeds, drying techniques, and types of filter paper used. For the centrifugation approach, the experimental factors tested included mixing procedure of solutions, stirring speeds, centrifugation times, drying techniques, and quantity of washing agents used. The size measurements and shape of the CaCO3 μ-spheres were investigated using compound microscopy. Scanning electron microscopy (SEM) was used to observe the fine surface morphological details of the CaCO3 μ-spheres. Overall results indicate that the centrifugation approach can yield better CaCO3 μ-spheres as compared to the membrane filtration approach in terms of narrow size distribution and uniform spherical shape. The fabricated CaCO3 μ-spheres can be used as inorganic templates for fabricating nano-engineered microcapsules.

Item Type: Article
Uncontrolled Keywords: CaCO3 microspheres, scanning electron microscopy (SEM), compound microscopy
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Faculty of Innovative Design & Technology
Depositing User: Syahmi Manaf
Date Deposited: 13 Sep 2022 04:36
Last Modified: 13 Sep 2022 04:36
URI: http://eprints.unisza.edu.my/id/eprint/7267

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