Low-Frequency Raman Spectroscopic Study on Compression-Induced Destabilization in Melt-Quenched Amorphous Celecoxib
Research output: Contribution to journal › Journal article › Research › peer-review
A series of melt-quenched disks of amorphous celecoxib were obtained using two different cooling rates (>100 °C/min and ∼25-30 °C/min) and subjected to different compression pressures (125, 250, and 500 MPa) and dwell times (0, 30, and 60 s). The kinetics of crystallization for these differently prepared melt-quenched disks were probed using a number of methods. Low-frequency Raman spectroscopy was used to monitor isothermal crystallization kinetics, whereas dynamic differential scanning calorimetry served as a complimentary technique to identify changes in form. Although both compression parameters destabilized the amorphous celecoxib, the dwell time was found to have a more critical overall effect. Additionally, the sample history was affirmed to be a factor for limiting the magnitude of compression-induced destabilization.
Original language | English |
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Journal | Molecular Pharmaceutics |
Volume | 16 |
Issue number | 8 |
Pages (from-to) | 3678-3686 |
Number of pages | 9 |
ISSN | 1543-8384 |
DOIs | |
Publication status | Published - 2019 |
- amorphous drugs, celecoxib, compression-induced destabilization, differential scanning calorimetry, low-frequency Raman spectroscopy
Research areas
ID: 241110495