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Mechanical grinding effect on thermodynamics and inclusion efficiency of loratadine–cyclodextrin inclusion complex formation
- Source :
-
Carbohydrate Polymers . Jan2012, Vol. 87 Issue 1, p512-517. 6p. - Publication Year :
- 2012
-
Abstract
- Abstract: The interaction of poor water-soluble drug loratadine (LOR) with β-cyclodextrin (β-CD) or hydroxypropyl-β-cyclodextrin (HP-β-CD) in aqueous or solid state was investigated. Mechanical grinding effect on the inclusion steps, thermodynamic kinetics and inclusion efficiency of inclusion complex formation of LOR with β-CD or HP-β-CD was quantitatively investigated by DSC and FT-IR microspectroscopy with curve-fitting analysis. The phase solubility profiles of LOR with β-CD and HP-β-CD were classified as AL-type phase diagram. The grinding-induced reduction in LOR crystallinity in the presence of β-CD or HP-β-CD was found to be apparent zero-order kinetics. The inclusion efficiency of solid inclusion complex for LOR/β-CD or LOR/HP-β-CD was significantly correlated with the reduction in LOR crystallinity and the grinding time. The mechanism of inclusion complex formation for LOR/β-CD or LOR/HP-β-CD was proposed through the progressive reduction in LOR crystallinity, the promoted LOR amorphization, and molecular inclusion processes in the continuous energy input process of mechanical grinding. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 01448617
- Volume :
- 87
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Carbohydrate Polymers
- Publication Type :
- Academic Journal
- Accession number :
- 66731731
- Full Text :
- https://doi.org/10.1016/j.carbpol.2011.08.010