scholarly journals Interkalasi Ion Mefenamat pada Host Mg/Al Hidrotalsit sebagai Rancangan Obat Lepas Lambat

2018 ◽  
Vol 4 (2) ◽  
pp. 149-155
Author(s):  
Fajar Indah Puspita Sari

The aim of this study was to intercalate mefenamic ions in the interlayer structure of Mg/Al hydrotalcite and to test the release of mefenamic ion from host hydrotalcite interlays to determine its potential as a slow release drug design. Intercalation of mefenamic ions into interlayer structure of Mg/Al hydrotalcite by ion exchange has been studied. This success intercalation was confirmed by XRD data, diffractogram before and after intercalation showed a shift of d003, d006 and d009. The change of d003 from 8.717 Å to 22.017 Å indicates that the mefenamic ion has entered the interlayers of hydrotalcite. The FTIR analysis confirms that the nitrate ion was successfully replaced by mefenamic ions in the hydrotalcite interlayer. FTIR data indicate the absorption of symmetry and asymmetry of carboxylic groups in 1381 and 1612 cm-1 of the mefenamic ion. Have studied ion exchange kinetics and release of mefenamic ions from hydrotalcite hosts to determine their potential as a slow-release drug design. The result show mefenamic ion can be released from the hydrotalcite host for 6 hours. So that Mg / Al hydrotalcite has the potential to be used in slow release drug design.  

2014 ◽  
Vol 111 ◽  
pp. 198-205 ◽  
Author(s):  
Vânea Ferreira Torres Teixeira ◽  
Nádia Rosa Pereira ◽  
Walter Ruggeri Waldman ◽  
Ana Luiza Cassiano Dias Ávila ◽  
Victor Haber Pérez ◽  
...  

2003 ◽  
Vol 792 ◽  
Author(s):  
Michael I. Ojovan ◽  
William E. Lee

ABSTRACTThe kinetics of alkali ion exchange of irradiated glasses were investigated using the structural energy barrier model for ion exchange of glasses. Derived rates of alkali ion exchange depend both on irradiation dose D(Gy) and dose rate q(Gy/s) illustrating that some effects cannot be simulated by external irradiation and require in-situ measurements. Higher D and q lead to increased ion exchange rates. Significant changes occur in the activation energies demonstrating a 4 – 6 times decrease depending on glass composition. Radiation-induced changes are higher at relatively low temperatures and are diminished by increased glass temperature. Numerical estimations show that changes in alkali ion exchange kinetics occur at D far below damaging doses.


1995 ◽  
Vol 28 (1) ◽  
pp. 13-20 ◽  
Author(s):  
Anatoly M. Dolgonosov ◽  
Ruslan Kh. Khamizov ◽  
Anna N. Krachak ◽  
Andrei G. Prudkovsky

2005 ◽  
Vol 22 (1) ◽  
pp. 127-132 ◽  
Author(s):  
Jei-Kwon Moon ◽  
Eil-Hee Lee ◽  
Yoon-Ju Han ◽  
Byung-Chul Lee ◽  
Hyung-Tae Kim

Author(s):  
D. Drummond ◽  
A. Jonge ◽  
L. V. C. Rees

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