Polyelectrolyte Matrices in the Modulation of Intermolecular Electrostatic Interactions for Amorphous Solid...

Area of Science:

• Pharmaceutical Science
• Polymer Chemistry
• Materials Science

Background:

• Polyelectrolytes are versatile excipients in pharmaceutical formulations.
• They are utilized in amorphous solid dispersions (ASDs) to modulate drug-polymer interactions.
• Common preparation methods include hot-melt extrusion.

Purpose of the Study:

• To explore the role of polyelectrolytes in enhancing drug delivery systems.
• To investigate their impact on the physical stability and biopharmaceutical performance of ASDs.
• To highlight their application in advanced drug release strategies.

Main Methods:

• Utilizing polyelectrolytes alone or with nonionic polymers (interpolyelectrolyte complexes).
• Incorporating small molecular additives.
• Employing hot-melt extrusion and novel continuous manufacturing processes.

Main Results:

• Polyelectrolytes enhance physical stability via intermolecular interactions and antiplasticizing effects.
• They improve drug dissolution and maintain drug supersaturation, particularly for weakly basic drugs.
• ASD preparation using polyelectrolyte matrices shows improved stability and performance.

Conclusions:

• Polyelectrolyte matrices offer an attractive alternative for ASD preparation.
• Scalable manufacturing aligned with green chemistry principles is feasible.
• These systems demonstrate improved physical stability and biopharmaceutical performance.