Ibuprofen release from hydrophilic ceramic-polymer composites

Area of Science:

• Materials Science
• Polymer Chemistry
• Biomedical Engineering

Background:

• Advanced composite materials are crucial for controlled drug delivery systems.
• Poly(methyl methacrylate) (PMMA) and poly(vinyl pyrrolidone) (PVP) are common polymers in biomedical applications.
• Alpha-alumina (alpha-Al2O3) offers unique properties for composite material design.

Purpose of the Study:

• To synthesize and characterize novel alpha-Al2O3/polymer composites for drug delivery.
• To investigate the influence of hydrophilic components on composite hydration and swelling.
• To evaluate the drug release kinetics of ibuprofen from the developed composite systems.

Main Methods:

• Free radical polymerization was used to prepare the composite systems.
• Spectroscopic techniques, thermogravimetric analysis (TGA), and differential thermal analysis (DTA) were employed for characterization.
• Hydration behavior and ibuprofen release were analyzed in buffered solutions at pH 7.4 and 37°C using UV spectroscopy.

Main Results:

• Composite swelling was significantly influenced by the hydrophilic content and the presence of alpha-Al2O3.
• The release of ibuprofen was modulated by the composite components.
• A controlled drug release profile was observed, notably lacking the typical 'burst' effect seen in purely hydrophilic systems.

Conclusions:

• The developed alpha-Al2O3/polymer composites demonstrate tunable hydration and drug release properties.
• The incorporation of alpha-Al2O3 effectively controls swelling and modulates ibuprofen release kinetics.
• These findings suggest potential for these composites in advanced drug delivery applications requiring sustained release.