Formulation studies on Ibuprofen sodium-cationic dextran conjugate: Effect on tabletting and dissolution characteristics of ibuprofen.

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dc.contributor.authorAbioye, Amos Olusegun
dc.contributor.authorKola-Mustapha, Adeola
dc.date.accessioned2018-03-28T10:46:13Z
dc.date.available2018-03-28T10:46:13Z
dc.date.issued2016
dc.description.abstractThe effect of electrostatic interaction between ibuprofen sodium (IbS) and cationic diethylaminoethyl dextran (Ddex), on the tableting properties and ibuprofen release from the conjugate tablet was investigated. Ibuprofen exhibits poor flow, compaction (tableting) and dissolution behavior due to its hydrophobic structure, high cohesive, adhesive and viscoelastic properties therefore it was granulated with cationic Ddex to improve its compression and dissolution characteristics. Electrostatic interaction and hydrogen bonding between IbS and Ddex was confirmed with FT-IR and DSC results showed a stepwise endothermic solid-solid structural transformation from racemic to anhydrous forms between 120 and 175 °C which melted into liquid form at 208.15 °C. The broad and diffused DSC peaks of the conjugate granules as well as the disappearance of ibuprofen melting peak provided evidence for their highly amorphous state. It was evident that Ddex improved the flowability and densification of the granules and increased the mechanical and tensile strengths of the resulting tablets as the tensile strength increased from 0.67 ± 0.0172 to 1.90 ± 0.0038 MPa with increasing Ddex concentration. Both tapping and compression processes showed that the most prominent mechanism of densification were particle slippage, rearrangement and plastic deformation while fragmentation was minimized. Ddex retarded the extent of dissolution in general, indicating potentials for controlled release formulations. Multiple release mechanisms including diffusion; anomalous transport and super case II transport were noted. It was concluded that interaction between ibuprofen sodium and Ddex produced a novel formulation with improved flowability, tableting and dissolution characteristics with potential controlled drug release characteristics dictated by Ddex concentration.en_US
dc.identifier.citationCharacterisation of a novel, multifunctional, co-processed excipient and its effect on release profile of paracetamol from tablets prepared by direct compression by Erhaga et alen_US
dc.identifier.urihttp://hdl.handle.net/123456789/199
dc.language.isoenen_US
dc.publisherDrug Development and Industrial Pharmacyen_US
dc.subject:Granulation,en_US
dc.subjectIbuprofen–Ddex conjugate,en_US
dc.subjectInter-particulate bonding,en_US
dc.subjectMechanism of compaction,en_US
dc.subjectMechanism of releaseen_US
dc.titleFormulation studies on Ibuprofen sodium-cationic dextran conjugate: Effect on tabletting and dissolution characteristics of ibuprofen.en_US
dc.typeArticleen_US

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