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Synthesis and Characterization of Supramolecular Colloids
Published on: April 22, 2016
Nanoparticle formation from probucol/PVP/sodium alkyl sulfate co-ground mixture
C Wanawongthai1, A Pongpeerapat, K Higashi
1Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan.
International Journal of Pharmaceutics
|May 5, 2009
Summary
The study found that longer alkyl chains on sodium alkyl sulfates (CnS) improve probucol nanoparticle formation. Longer chains (C18S, C16S) yielded more efficient nanoparticle production and stabilization.
Area of Science:
- Pharmaceutical Sciences
- Materials Science
Background:
- Probucol is a poorly water-soluble drug.
- Developing effective nanoparticle formulations is crucial for drug delivery.
Purpose of the Study:
- To investigate how the alkyl chain length of sodium alkyl sulfates (CnS) influences probucol nanoparticle formation.
- To determine the optimal surfactant for probucol nanoparticle production.
Main Methods:
- Co-grinding probucol with polyvinylpyrrolidone (PVP) and sodium alkyl sulfates (CnS, n=6, 8, 12, 16, 18).
- Particle size determination and quantitative analysis of nanoparticle fraction using High-Performance Liquid Chromatography (HPLC).
- Solid-state Nuclear Magnetic Resonance ((13)C NMR) spectroscopy to analyze drug-excipient interactions.
Main Results:
- Alkyl chain length significantly affected probucol nanoparticle formation.
- Nanoparticle formation efficiency followed the order: C18S > C16S > C12S > C8S > C6S.
- Over 95% of probucol nanoparticles under 800 nm were produced with increased surfactant amounts, with longer chains showing better results.
Conclusions:
- Sodium alkyl sulfates with longer alkyl chains are more effective in forming probucol nanoparticles.
- Excess surfactants stabilize probucol nanoparticles through electrostatic repulsion.
- This study provides insights into optimizing nanoparticle formulation for poorly soluble drugs.
