Physicochemical and Technical Studies of an Interpolymer Complex of Polymethyacrylic Acid and Polyethylene Glycol as the Base for Creating Matrix Systems

Resumo

The physicochemical and technological properties of an interpolymer complex of polymethyacrylic acid and polyethylene glycol, known under its commercial name “Polymer Carrier Composition” (FGUP Science Research Institute of Polymers, Russia), were studied. This polymer is an excipient substance used in the technology of solid dosage forms as a matrix former and as a film-forming agent for making long-acting and slow-release formulations. With the aim of widening the potential uses of the polymer carrier composition, the solubility of the polymer in aqueous solutions and organic solvents was studied, along with the technological and surfactant properties of the polymer; the critical gel-forming concentration was also determined. Experimental samples of tablets and oral gels of model substances with similar physicochemical properties were prepared, based on different concentrations of the Polymer Carrier Composition, and the technological, rheological, and biopharmaceutical properties of these were studied. The potential for using the polymer in both hard and soft dosage forms to obtain prolonged-release medicinal formulations is demonstrated.