Encapsulation of Aspirin into parent and functionalized MCM-41, in vitro release as well as kinetics

  • Priyanka Solanki
  • Anjali PatelEmail author


Parent as well as functionalized MCM-41 (by 12-tungstophosphoric acid, TPA) was loaded with poorly soluble drug (Aspirin) and characterized by various physicochemical techniques such as TGA, FT-IR, BET surface area, XRD and TEM. In-vitro controlled release studies of Aspirin, in Simulated Body Fluid (pH 7.4) were carried out under stirring as well as static conditions. Similarly, release study was carried in simulated gastric fluid (pH 1.2), to see the effect of pH on release rate of drug. The influence of 12-tungstophosphoric acid on release rate of drug was also studied. Further, comparison of obtained release profile with marketed formulation (Ecosprin) was carried out. First order release kinetic, Higuchi model, Korsmeyer-Peppas Model and Extended Kinetic Model indicate that the functionalization by inorganic moiety, TPA plays an important role in release of Aspirin.


MCM-41 12-Tungstophophoric acid Aspirin Ecosprin Kinetics and Mechanism 



PS is thankful to University Grant commission (UGC), New Delhi for the award of Senior Research Fellowship. We are also thankful to Department of Chemistry, The Maharaja Sayajirao University of Baroda, for nitrogen adsorption–desorption analysis.

Compliance with ethical standards

Conflict of interest

Author claim no conflict of interest.

Supplementary material

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Supplementary material 1 (DOCX 679 kb)


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Authors and Affiliations

  1. 1.Department of Chemistry, Faculty of ScienceThe Maharaja Sayajirao University of BarodaVadodaraIndia

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