The effect of surfactant extraction method on pore characteristics of mesoporous carbonated hydroxyapatite
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Trans Tech Publications
2014
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my.unimap-335402014-04-09T03:42:54Z The effect of surfactant extraction method on pore characteristics of mesoporous carbonated hydroxyapatite Nur Farahiyah, Mohammad Radzali, Othman Yeoh, Fei Yee farahiyah@unimap.edu.my radzali@eng.usm.my srfeiyee@eng.usm.my Mesoporous Non-Ionic surfactant Pore size Surface area Surfactant washing Link to publisher's homepage at http://www.ttp.net/ Incorporated with pore sizes of 2-50 nm, CHA was found to be a promising drug delivery agent for disease treatment and could be a carrier for different types of proteins. A desired drug delivery system should consist of an ordered pore network, optimum pore size, and volume, as well as a high surface area, to allow a high drug adsorption rate, controllable drug loading, and release. However, until now, most results are still not up to expectation; since the BET surface area and pore volume obtained has been rather low, compared to the existing mesoporous silica. The objective of this work was to investigate the effect of surfactant washing on the pore characteristics and the importance of this step in the synthesis process of mesoporous carbonated hydroxyapatite (CHA). In this study, mesostructured CHA particles were prepared, via a self-assembly mechanism, between CHA and non-ionic surfactant (P123), using the co-precipitation synthesis method. The synthesized mesoporous CHA samples were washed five times using different types of solvents for surfactant removal. A sphere-like particle shape of CHA was observed under SEM for all samples; regardless of the type of solvent used. The formation of CHA was confirmed by FTIR analysis, where the carbonate ion peaks were observed in the spectrums. It was found that the mesoporous CHA with a high surface area was synthesized when high polarity solvents were used during surfactant washing. These results imply that high surface area mesoporous CHA can be obtained through surfactant washing, without applying calcination for surfactant removal, which may change the structure of the CHA during heat treatment. 2014-04-09T03:42:54Z 2014-04-09T03:42:54Z 2014 Article Advanced Materials Research, vol.858, 2014, pages 190-198 1662-8985 http://dspace.unimap.edu.my:80/dspace/handle/123456789/33540 http://www.scientific.net/AMR.858.190 10.4028/www.scientific.net/AMR.858.190 en Trans Tech Publications |
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English |
| topic |
Mesoporous Non-Ionic surfactant Pore size Surface area Surfactant washing |
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Mesoporous Non-Ionic surfactant Pore size Surface area Surfactant washing Nur Farahiyah, Mohammad Radzali, Othman Yeoh, Fei Yee The effect of surfactant extraction method on pore characteristics of mesoporous carbonated hydroxyapatite |
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Link to publisher's homepage at http://www.ttp.net/ |
| author2 |
farahiyah@unimap.edu.my |
| author_facet |
farahiyah@unimap.edu.my Nur Farahiyah, Mohammad Radzali, Othman Yeoh, Fei Yee |
| format |
Article |
| author |
Nur Farahiyah, Mohammad Radzali, Othman Yeoh, Fei Yee |
| author_sort |
Nur Farahiyah, Mohammad |
| title |
The effect of surfactant extraction method on pore characteristics of mesoporous carbonated hydroxyapatite |
| title_short |
The effect of surfactant extraction method on pore characteristics of mesoporous carbonated hydroxyapatite |
| title_full |
The effect of surfactant extraction method on pore characteristics of mesoporous carbonated hydroxyapatite |
| title_fullStr |
The effect of surfactant extraction method on pore characteristics of mesoporous carbonated hydroxyapatite |
| title_full_unstemmed |
The effect of surfactant extraction method on pore characteristics of mesoporous carbonated hydroxyapatite |
| title_sort |
effect of surfactant extraction method on pore characteristics of mesoporous carbonated hydroxyapatite |
| publisher |
Trans Tech Publications |
| publishDate |
2014 |
| url |
http://dspace.unimap.edu.my:80/dspace/handle/123456789/33540 |
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1643797205087158272 |