Title: Characterization of ibuprofen as a nontraditional plasticizer of ethyl cellulose
Authors: De Brabander, C ×
Van den Mooter, Guy
Vervaet, C
Remon, J P #
Issue Date: Jul-2002
Series Title: Journal of pharmaceutical sciences vol:91 issue:7 pages:1678-1685
Abstract: This study describes the characterization of the plasticizing properties of ibuprofen (IBP) on hot-melt extruded ethyl cellulose (EC). The thermal behavior of hot-melt extrudates containing 0, 5, 10, and 20% (w/w) IBP was evaluated using modulated temperature differential scanning calorimetry. By means of comparison, co-evaporates containing the same concentrations of IBP and EC, were also evaluated. Both methods yielded solid solutions having one glass transition temperature indicating compatibility between drug and polymer. A similar decrease in glass transition temperature was noticed with increasing IBP concentration in the solid solutions prepared via both methods, indicating its plasticizing effect. The plasticizing efficiency was of the same magnitude as for the traditionally used plasticizers. Infrared spectroscopy was performed for better understanding of the chemical interactions in the molecular dispersions and confirmed the existence of hydrogen bonds between IBP and EC. Overall, the study has highlighted the plasticizing properties of IBP on EC during hot-melt extrusion.
ISSN: 0022-3549
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Drug Delivery and Disposition
× corresponding author
# (joint) last author

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