Physical characterization of chitosan/gelatin-alginate composite beads for controlled release of urea

Zinc-Alginate Beads for the Controlled Release of Rifampicin

The present study describes the preparation of a carrier system based on zinc-alginate beads and to evaluate its potential for the controlled release of rifampicin, the poorly water soluble drug using ionic gelation technique. The surface topology of the developed beads were analyzed by Scanning Electron Microscopy and the crosslinking process was investigated by Fourier Transform. Infrared spe...

fabrication and characterization of controlled release system of theophylline in chitosan beads

Composite alginate hydrogels: An innovative approach for the controlled release of hydrophobic drugs.

We present an innovative methodology for the sustained delivery of hydrophobic drugs using composite hydrogels, prepared by embedding oil-in-water microemulsions in hydrophilic hydrogels. The hydrophobic nature of the microemulsion core enhances the solubilization of hydrophobic drugs, while the crosslinked matrix could be readily used as a solid controlled delivery vehicle. A microemulsion was...

Formulation of Ibuprofen Beads by Ionotropic Gelation

Microencapsulation has become a common technique in the production of controlled release dosage forms. Many results have been reported, concerning the use of alginate beads as controlled release drug formulations. Alginate has a unique gel-forming property in the presence of multivalent cations, in an aqueous medium. Ibuprofen is an excellent analgesic and antipyretic, non-steroidal anti-inflam...

Novel High Capacity Swelling Superabsorbent Composite and Its Potential for Controlled Release of Fertilizers

A hydrophilic macromolecular network is prepared by performing graft copolymerization of poly (sodium acrylate) chains onto salep and silica gel. The reaction parameters affecting the water absorbency of the superabsorbent composite were optimized using Taguchi method. FT-IR spectroscopy and Thermo Gravimetric Analysis (TGA) were used for confirming the s...